APA-referens (7:e uppl.)

Aylward, F., & Jul, M. (1975). Protein and nutrition policy in low-income countries. C. Knight.

Chicago-referens (17:e uppl.)

Aylward, Francis, och Mogens Jul. Protein and Nutrition Policy in Low-income Countries. London: C. Knight, 1975.

MLA-referens (8:e uppl.)

Aylward, Francis, och Mogens Jul. Protein and Nutrition Policy in Low-income Countries. C. Knight, 1975.