Παραπομπή APA

Robinson, D. J. S. (2003). An introduction to abstract algebra. Walter de Gruyter.

Παραπομπή Chicago Style

Robinson, Derek John Scott. An Introduction to Abstract Algebra. New York: Walter de Gruyter, 2003.

Παραπομπή MLA

Robinson, Derek John Scott. An Introduction to Abstract Algebra. Walter de Gruyter, 2003.