Cita APA (7th ed.)

Morton, R. L. (1937). Teaching arithmetic in elementary school. Silver Burdett company.

Cita Chicago (17th ed.)

Morton, Robert Lee. Teaching Arithmetic in Elementary School. New York, boston [etc.]: Silver Burdett company, 1937.

Cita MLA (9th ed.)

Morton, Robert Lee. Teaching Arithmetic in Elementary School. Silver Burdett company, 1937.