Cita APA

Taylor, E. H., & Mills, C. N. (1961). Arithmetic: For teacher-training classes (4th ed.).

Citación estilo Chicago

Taylor, E. H., y C. N. Mills. Arithmetic: For Teacher-training Classes. 4th ed. 1961.

Cita MLA

Taylor, E. H., y C. N. Mills. Arithmetic: For Teacher-training Classes. 4th ed. 1961.