APA (7th ed.) Zitazioa
(1994). The collected poems of Langston Hughes. Vintage classics.
Chicago Style (17th ed.) Zitazioa
The Collected Poems of Langston Hughes. New York: Vintage classics, 1994.
MLA (9th ed.) Zitazioa
The Collected Poems of Langston Hughes. Vintage classics, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.