Cita APA (7a ed.)

Ley, C. D. (1959). Twentieth century English poetry (1st ed. in this series.). Alhambra.

Cita Chicago Style (17a ed.)

Ley, Charles David. Twentieth Century English Poetry. 1st ed. in this series. Madrid: Alhambra, 1959.

Cita MLA (9a ed.)

Ley, Charles David. Twentieth Century English Poetry. 1st ed. in this series. Alhambra, 1959.