APA (7th ed.) Citation

Hildreth, G. H., & Boynton, P. L. (1936). Learning the three R's: A modern interpretation. Educational publishers inc..

Chicago Style (17th ed.) Citation

Hildreth, Gertrude Howell, and Paul Lewis Boynton. Learning the Three R's: A Modern Interpretation. Minneapolis, Nashville etc.: Educational publishers inc., 1936.

MLA (9th ed.) Citation

Hildreth, Gertrude Howell, and Paul Lewis Boynton. Learning the Three R's: A Modern Interpretation. Educational publishers inc., 1936.