APA
Aykroyd W., . (1946). Nutrition. London: Oxford University Press.
Chicago
Aykroyd W.R, . 1946. Nutrition. London: Oxford University Press.
Harvard
Aykroyd W., . (1946). Nutrition. London: Oxford University Press.
MLA
Aykroyd W.R, . Nutrition. London: Oxford University Press. 1946.