APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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