Cita APA (7a ed.)

Keats, J. (1950). Selected poems. Appleton-Century Crofts.

Cita Chicago Style (17a ed.)

Keats, John. Selected Poems. New York: Appleton-Century Crofts, 1950.

Cita MLA (9a ed.)

Keats, John. Selected Poems. Appleton-Century Crofts, 1950.