APA-referens (7:e uppl.)

Wyon, J. B., & Gordon, J. E. (1971). The Khanna study: Population problems in the rural Punjab. Harvard University Press.

Chicago-referens (17:e uppl.)

Wyon, J. B., och John Everett Gordon. The Khanna Study: Population Problems in the Rural Punjab. Cambridge, Mass.: Harvard University Press, 1971.

MLA-referens (8:e uppl.)

Wyon, J. B., och John Everett Gordon. The Khanna Study: Population Problems in the Rural Punjab. Harvard University Press, 1971.