Cita APA (7th ed.)

Howard, C. F., & Dumas, E. j. a. (1966). Teaching contemporary mathematics in the elementary school. Harper and Row.

Cita Chicago (17th ed.)

Howard, Charles Frederick, i Enoch joint auth Dumas. Teaching Contemporary Mathematics in the Elementary School. New York: Harper and Row, 1966.

Cita MLA (9th ed.)

Howard, Charles Frederick, i Enoch joint auth Dumas. Teaching Contemporary Mathematics in the Elementary School. Harper and Row, 1966.