APA-referens (7:e uppl.)

Dugopolski, M., & Mark Dogopolski. (2012). Algebra: For college students (6th ed.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Dugopolski, Mark, och Mark Dogopolski. Algebra: For College Students. 6th ed. New York: McGraw-Hill, 2012.

MLA-referens (9:e uppl.)

Dugopolski, Mark, och Mark Dogopolski. Algebra: For College Students. 6th ed. McGraw-Hill, 2012.