Παραπομπή APA

Nicholson, W. K. (2012). Introduction to abstract algebra (4th ed.). Wiley.

Παραπομπή Chicago Style

Nicholson, W. Keith. Introduction to Abstract Algebra. 4th ed. Hoboken: Wiley, 2012.

Παραπομπή MLA

Nicholson, W. Keith. Introduction to Abstract Algebra. 4th ed. Wiley, 2012.