Cita APA

Fehr, H. F., Fey, J. T., & Hill, T. J. (1972). Unified mathematics course. Addison-Wesley.

Citación estilo Chicago

Fehr, Howard F., James T. Fey, and Thomas J. Hill. Unified Mathematics Course. Menlo Park: Addison-Wesley, 1972.

Cita MLA

Fehr, Howard F., et al. Unified Mathematics Course. Addison-Wesley, 1972.