APA-referens (7:e uppl.)

Riggs, J. L. (1982). Essentials of engineering economics. McGraw-Hill.

Chicago-referens (17:e uppl.)

Riggs, James L. Essentials of Engineering Economics. New York: McGraw-Hill, 1982.

MLA-referens (9:e uppl.)

Riggs, James L. Essentials of Engineering Economics. McGraw-Hill, 1982.