APA aipamena

Stwertka, E., & Stwertka, A. (1981). Population: Growth, change, and impact. F. Watts.

Chicago Style aipamena

Stwertka, Eve, and Albert Stwertka. Population: Growth, Change, and Impact. New York: F. Watts, 1981.

MLA aipamena

Stwertka, Eve, and Albert Stwertka. Population: Growth, Change, and Impact. F. Watts, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.