Cita APA

Betz, W. n. 1., & Betz, W. n. 1. (1951). Everyday junior mathematics. New York, New York: Ginn.

Citación estilo Chicago

Betz, William n. 1879, y William n. 1879 Betz. Everyday Junior Mathematics. New York, New York: Ginn, 1951.

Cita MLA

Betz, William n. 1879, y William n. 1879 Betz. Everyday Junior Mathematics. New York, New York: Ginn, 1951.