APA (7th ed.) Citation

Keyfitz, N., & Flieger, W. (1971). Population, facts and methods of demography. W. H. Freeman.

Chicago Style (17th ed.) Citation

Keyfitz, Nathan, and Wilhelm Flieger. Population, Facts and Methods of Demography. San Francisco: W. H. Freeman, 1971.

MLA (8th ed.) Citation

Keyfitz, Nathan, and Wilhelm Flieger. Population, Facts and Methods of Demography. W. H. Freeman, 1971.