Cita APA

Arlen, A. 1., & Sievier, B. (1938). I heard a blackbird in a tree: Song. New York: Boosey & Hawkes.

Citación estilo Chicago

Arlen, Albert 1905-1993, y Bruce Sievier. I Heard a Blackbird in a Tree: Song. New York: Boosey & Hawkes, 1938.

Cita MLA

Arlen, Albert 1905-1993, y Bruce Sievier. I Heard a Blackbird in a Tree: Song. New York: Boosey & Hawkes, 1938.