Cita APA (7th ed.)
Robinson, D. J. S. (2003). An introduction to abstract algebra. Walter de Gruyter.
Cita Chicago (17th ed.)
Robinson, Derek John Scott. An Introduction to Abstract Algebra. New York: Walter de Gruyter, 2003.
Cita MLA (9th ed.)
Robinson, Derek John Scott. An Introduction to Abstract Algebra. Walter de Gruyter, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.