APA (7th ed.) Citation

Guillén, N., Hughes, L., & Carruthers, B. F. (1948). Cuba libre: Poems. Anderson & Ritchie.

Chicago Style (17th ed.) Citation

Guillén, Nicolás, Langston Hughes, and Ben Frederic Carruthers. Cuba Libre: Poems. Los Angeles: Anderson & Ritchie, 1948.

MLA (9th ed.) Citation

Guillén, Nicolás, et al. Cuba Libre: Poems. Anderson & Ritchie, 1948.