APA
Horst R. K., . (1979). Westcott's plant disease handbook. New York: Van Nostrand Reinhold Company.
Chicago
Horst R Kenneth, . 1979. Westcott's plant disease handbook. New York: Van Nostrand Reinhold Company.
Harvard
Horst R. K., . (1979). Westcott's plant disease handbook. New York: Van Nostrand Reinhold Company.
MLA
Horst R Kenneth, . Westcott's plant disease handbook. New York: Van Nostrand Reinhold Company. 1979.
