APA (7th ed.) Citation

National Gardening Association (U.S.) & Philip Leif Group. (1994). Dictionary of horticulture. Viking.

Chicago Style (17th ed.) Citation

National Gardening Association (U.S.) and Philip Leif Group. Dictionary of Horticulture. New York: Viking, 1994.

MLA (9th ed.) Citation

National Gardening Association (U.S.) and Philip Leif Group. Dictionary of Horticulture. Viking, 1994.