APA aipamena

Preston, S. H. e. a. (1990). Demography. Blackwell Publishers.

Chicago Style aipamena

Preston, Samuel H et al. Demography. Blackwell Publishers, 1990.

MLA aipamena

Preston, Samuel H et al. Demography. Blackwell Publishers, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.