Cita APA (7a ed.)

Frost, R., & Untermeyer, L. (1971). Robert Frost's poems: With an introduction and commentary. Pocket Books.

Cita Chicago Style (17a ed.)

Frost, Robert, y Louis Untermeyer. Robert Frost's Poems: With an Introduction and Commentary. New York: Pocket Books, 1971.

Cita MLA (8a ed.)

Frost, Robert, y Louis Untermeyer. Robert Frost's Poems: With an Introduction and Commentary. Pocket Books, 1971.