Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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