Free, J. B. (1970). Insect pollination of crops. Academic Press.
Chicago Style (17th ed.) CitationFree, John Brand. Insect Pollination of Crops. London: Academic Press, 1970.
MLA (9th ed.) CitationFree, John Brand. Insect Pollination of Crops. Academic Press, 1970.
Warning: These citations may not always be 100% accurate.