Cita APA (7th ed.)

Marks, J. L. (1965). Teaching elementary mathematics for understanding. McGraw-Hill.

Cita Chicago (17th ed.)

Marks, John L. Teaching Elementary Mathematics for Understanding. New York: McGraw-Hill, 1965.

Cita MLA (9th ed.)

Marks, John L. Teaching Elementary Mathematics for Understanding. McGraw-Hill, 1965.