Παραπομπή APA

Gallian, J. A. (1986). Contemporary abstract algebra. D.C. Heath.

Παραπομπή Chicago Style

Gallian, Joseph A. Contemporary Abstract Algebra. Lexington, Mass.: D.C. Heath, 1986.

Παραπομπή MLA

Gallian, Joseph A. Contemporary Abstract Algebra. D.C. Heath, 1986.