Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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