Cita APA

Sawyer, W. W. 1., & Sawyer, W. W. 1. (1959). A Concrete approach to abstract algebra. San Francisco: W.H. Freeman.

Citación estilo Chicago

Sawyer, Walter Warwick 1911-, y Walter Warwick 1911- Sawyer. A Concrete Approach to Abstract Algebra. San Francisco: W.H. Freeman, 1959.

Cita MLA

Sawyer, Walter Warwick 1911-, y Walter Warwick 1911- Sawyer. A Concrete Approach to Abstract Algebra. San Francisco: W.H. Freeman, 1959.