APA-referens (7:e uppl.)

Butz, W. P. (1982). Demographic challenges in America's future. Rand.

Chicago-referens (17:e uppl.)

Butz, William P. Demographic Challenges in America's Future. Sta. Monica, Calif: Rand, 1982.

MLA-referens (9:e uppl.)

Butz, William P. Demographic Challenges in America's Future. Rand, 1982.