APA (7th ed.) Citation

Frost, R., Poirier, R., & Richardson, M. (1995). Collected poems, prose & plays. Library of America.

Chicago Style (17th ed.) Citation

Frost, Robert, Richard Poirier, and Mark Richardson. Collected Poems, Prose & Plays. New York: Library of America, 1995.

MLA (9th ed.) Citation

Frost, Robert, et al. Collected Poems, Prose & Plays. Library of America, 1995.