Cita APA (7a ed.)

Free, J. B. (1970). Insect pollination of crops. Academic Press.

Cita Chicago Style (17a ed.)

Free, John B. Insect Pollination of Crops. London: Academic Press, 1970.

Cita MLA (8a ed.)

Free, John B. Insect Pollination of Crops. Academic Press, 1970.