APA (7th ed.) Citation

Harrison, S. G., Masefield, G. B., & Wallis, M. (1969). The Oxford Book of food plants. Oxford Univ. Pr.

Chicago Style (17th ed.) Citation

Harrison, S. G., G. B. Masefield, and Michael Wallis. The Oxford Book of Food Plants. London: Oxford Univ. Pr, 1969.

MLA (9th ed.) Citation

Harrison, S. G., et al. The Oxford Book of Food Plants. Oxford Univ. Pr, 1969.