APA-referens (7:e uppl.)

Aber, J. W. (1973). Beta coefficients and models of security return. Lexington Books.

Chicago-referens (17:e uppl.)

Aber, John W. Beta Coefficients and Models of Security Return. Lexington, Mass: Lexington Books, 1973.

MLA-referens (9:e uppl.)

Aber, John W. Beta Coefficients and Models of Security Return. Lexington Books, 1973.