APA-referens (7:e uppl.)

Goldberg, S. (1958). Introduction to difference equations: With illustrative examples from economics, psychology, and sociology. Wiley.

Chicago-referens (17:e uppl.)

Goldberg, Samuel. Introduction to Difference Equations: With Illustrative Examples from Economics, Psychology, and Sociology. New York: Wiley, 1958.

MLA-referens (9:e uppl.)

Goldberg, Samuel. Introduction to Difference Equations: With Illustrative Examples from Economics, Psychology, and Sociology. Wiley, 1958.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.