APA aipamena

(1969). Principles and recommendations for the 1970 population censuses. [s.n.].

Chicago Style aipamena

Principles and Recommendations for the 1970 Population Censuses. New York: [s.n.], 1969.

MLA aipamena

Principles and Recommendations for the 1970 Population Censuses. [s.n.], 1969.