APA aipamena

Theobald, R. (1961). The challenge of abundance. New York: C. N. Potter.

Chicago Style aipamena

Theobald, Robert. The Challenge of Abundance. New York: C. N. Potter, 1961.

MLA aipamena

Theobald, Robert. The Challenge of Abundance. New York: C. N. Potter, 1961.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.