APA-referens (7:e uppl.)

STEPHENS, R. T. (1977). Worktext in intermediate algebra. West Pub. Co.

Chicago-referens (17:e uppl.)

STEPHENS, Robert T. Worktext in Intermediate Algebra. St. Paul: West Pub. Co, 1977.

MLA-referens (9:e uppl.)

STEPHENS, Robert T. Worktext in Intermediate Algebra. West Pub. Co, 1977.