APA (7th ed.) Citation

Frost, R., & Peterson, R. C. (2004). A collection of poems. Thomson/Wadsworth.

Chicago Style (17th ed.) Citation

Frost, Robert, and Robert C. Peterson. A Collection of Poems. Boston, MA: Thomson/Wadsworth, 2004.

MLA (9th ed.) Citation

Frost, Robert, and Robert C. Peterson. A Collection of Poems. Thomson/Wadsworth, 2004.