Wyon, J. B., & Gordon, J. E. (1971). The Khanna study: Population problems in the rural Punjab. Harvard University Press.
Cita Chicago (17th ed.)Wyon, J. B., i John Everett Gordon. The Khanna Study: Population Problems in the Rural Punjab. Cambridge, Mass.: Harvard University Press, 1971.
Cita MLA (8th ed.)Wyon, J. B., i John Everett Gordon. The Khanna Study: Population Problems in the Rural Punjab. Harvard University Press, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.