APA (7th ed.) Citation

Frost, R., & Untermeyer, L. (1963). The letters of Robert Frost to Louis Untermeyer ([1st ed.].). Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Frost, Robert, and Louis Untermeyer. The Letters of Robert Frost to Louis Untermeyer. [1st ed.]. New York: Holt, Rinehart and Winston, 1963.

MLA (8th ed.) Citation

Frost, Robert, and Louis Untermeyer. The Letters of Robert Frost to Louis Untermeyer. [1st ed.]. Holt, Rinehart and Winston, 1963.