APA-referens (7:e uppl.)

Dugopolski, M. (2006). Elementary and intermediate algebra (2nd ed.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Dugopolski, Mark. Elementary and Intermediate Algebra. 2nd ed. Boston, MA: McGraw-Hill, 2006.

MLA-referens (9:e uppl.)

Dugopolski, Mark. Elementary and Intermediate Algebra. 2nd ed. McGraw-Hill, 2006.