APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (8. p.)

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