APA (7th ed.) Citation
Untermeyer, L. (1962). A pocket book of Robert Frost's. Washington Square Press.
Chicago Style (17th ed.) Citation
Untermeyer, Louis. A Pocket Book of Robert Frost's. New York: Washington Square Press, 1962.
MLA (9th ed.) Citation
Untermeyer, Louis. A Pocket Book of Robert Frost's. Washington Square Press, 1962.
Warning: These citations may not always be 100% accurate.