Cita APA (7th ed.)

Gallian, J. A. (1990). Contemporary abstract algebra (2nd ed.). D.C. Heath.

Cita Chicago (17th ed.)

Gallian, Joseph A. Contemporary Abstract Algebra. 2nd ed. Lexington: D.C. Heath, 1990.

Cita MLA (9th ed.)

Gallian, Joseph A. Contemporary Abstract Algebra. 2nd ed. D.C. Heath, 1990.