APA (7th ed.) Citation

Pollard, A. H., Yusuf, F., & Pollard, G. N. (1981). Demographic techniques (2. ed.). Pergamon Pr.

Chicago Style (17th ed.) Citation

Pollard, Alfred H., Farhat Yusuf, and G. N. Pollard. Demographic Techniques. 2. ed. Oxford: Pergamon Pr, 1981.

MLA (9th ed.) Citation

Pollard, Alfred H., et al. Demographic Techniques. 2. ed. Pergamon Pr, 1981.