APA (7th ed.) Citation

Greenberg, R. A., & Hepburn, J. G. (1961). Robert Frost: An introduction. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Greenberg, Robert A., and James G. Hepburn. Robert Frost: An Introduction. New York: Holt, Rinehart and Winston, 1961.

MLA (9th ed.) Citation

Greenberg, Robert A., and James G. Hepburn. Robert Frost: An Introduction. Holt, Rinehart and Winston, 1961.