Free, J. B. (1993). Insect pollination of crops (2nd ed.). Academic Press.
Chicago Style (17th ed.) CitationFree, John Brand. Insect Pollination of Crops. 2nd ed. London ; San Diego: Academic Press, 1993.
MLA (9th ed.) CitationFree, John Brand. Insect Pollination of Crops. 2nd ed. Academic Press, 1993.
Warning: These citations may not always be 100% accurate.