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- Beckett, Kenneth A. The R.H.S. Encyclopedia of House Plants . North Vancouver BC: Whitecap, 1995.
- Benvie, Sam. The Encyclopedia of Trees: Canada and the United States . Toronto: Key Porter Books, 1999.
- Biggs, Matthew. Complete Book of Vegetables . Vancouver, BC: Raincoast Books, 1997.
- Castleman, Michael. The Healing Herbs . Emmaus, PA: Rodale Press, 1991.
- The Gardener’s Encyclopedia of Plants and Flowers . London: Dorling Kindersley, 1989.
- Guide to Trees. New York: Simon and Schuster, 1978.
- Hewitt, Terry. The Complete Book of Cacti and Succulents . Montreal: Reader’s Digest Association, 1993.
- Hodgson, Larry, and Powell, Charles C. Ortho’s Houseplant Encyclopedia . San Ramon CA: Ortho Books, 1993.
- Hora, Bayard, ed. Illustrated Book of Trees and Forests of the World . New York: Marshall Cavendish, 1990.
- Johnson, Hugh. The International Book of Trees . New York: Simon and Schuster, 1973.
- Jones, David L. Cycads of the World . Washington: Smithsonian Institution Press, 1993.
- Lanner, Ronald M. The Piñon Pine . Reno NV: University of Nevada Press, 1981.
- The Marshall Cavendish Illustrated Encyclopedia of Plants and Earth Sciences. New York: Marshall Cavendish, 1990.
- Murray, Ian. Houseplants and Bottle Gardens . Marlborough UK: Crowood Press, 1991.
- PDR for Herbal Medicines . Montvale,NJ: Medical Economics Company, 1998.
- Petrides, George A. A Field Guide to Trees and Shrubs . Boston: Houghton Mifflin, 1972.
- The Plant World. Chicago: World Book Inc., 1986.
- Reader’s Digest Encyclopedia of Garden Plants and Flowers . London: Reader’s Digest Association, 1975.
- Rinzler, Carol Ann. The Complete Book of Herbs, Spices, and Condiments . New York: Facts on File, 1990.
- Rushforth, Keith D. Conifers . New York: Facts on File Publications, 1987.
- Sporne, K. R. The Morphology of Gymnosperms . London: Hutchinson, 1965.
- Staff of the Liberty Hyde Bailey Hortorium. Hortus Third . New York: Macmillan Publishing Company, 1976.
- Stewart, Lynette. A Guide to Palms and Cycads of the World . Auckland: Harper Collins, 1994.
- Tampion, John. Dangerous Plants . New York: Universe Books, 1977.
- Wolverton, B. C. Eco-friendly House Plants . London: Weiderfeld and Nicolson, 1996.
Libraries Used
- Burnaby Public Library, Metrotown Branch, Burnaby, British Columbia, Canada.
- Colchester – East Hants Regional Library, Truro, Nova Scotia, Canada.
- ECOSUR College Library, San Cristóbal de Las Casas, Chiapas, México.
- Surrey Public Library, Guildford Branch, Surrey, British Columbia, Canada.
- Surrey Public Library, Newton Branch, Surrey, British Columbia, Canada.
- Surrey Public Library, Ocean Park Branch, White Rock, British Columbia, Canada.
- Surrey Public Library, Whalley Branch, Surrey, British Columbia, Canada.
- Weld County Public Library District, Centennial Branch, Greeley, Colorado, USA.
- Vancouver Public Library, Central Branch, Vancouver, British Columbia, Canada.