Cita APA (7a ed.)

Cronin, D., & Lewin, B. (2010). A barnyard collection: Click, clack, moo and more. Atheneum Books for Young Readers.

Cita Chicago Style (17a ed.)

Cronin, Doreen, y Betsy Lewin. A Barnyard Collection: Click, Clack, Moo and More. New York: Atheneum Books for Young Readers, 2010.

Cita MLA (8a ed.)

Cronin, Doreen, y Betsy Lewin. A Barnyard Collection: Click, Clack, Moo and More. Atheneum Books for Young Readers, 2010.