Cita APA

Howard, C. F., & Dumas, E. a. (1963). Basic procedures in teaching arithmetic. F. W. Heath & Co.

Citación estilo Chicago

Howard, Charles Frederick, and Enoch author Dumas. Basic Procedures in Teaching Arithmetic. Boston, Massachusetts: F. W. Heath & Co, 1963.

Cita MLA

Howard, Charles Frederick, and Enoch author Dumas. Basic Procedures in Teaching Arithmetic. F. W. Heath & Co, 1963.