APA
Hopkins W. G., . (1999). Introduction to plant physiology. New York: John Wiley & Sons.
Chicago
Hopkins William G, . 1999. Introduction to plant physiology. New York: John Wiley & Sons.
Harvard
Hopkins W. G., . (1999). Introduction to plant physiology. New York: John Wiley & Sons.
MLA
Hopkins William G, . Introduction to plant physiology. New York: John Wiley & Sons. 1999.