APA (7th ed.) Citation

Nicholson, B., Harrison, S. G., Masefield, G. B., & Wallis, M. (1969). The Oxford book of food plants. Oxford U.P..

Chicago Style (17th ed.) Citation

Nicholson, Barbara, Sydney Gerald Harrison, G. B. Masefield, and Michael Wallis. The Oxford Book of Food Plants. London: Oxford U.P., 1969.

MLA (9th ed.) Citation

Nicholson, Barbara, et al. The Oxford Book of Food Plants. Oxford U.P., 1969.