Cita APA (7a ed.)

Spinelli, E., & DePalma, M. N. (2011). Now it is summer. Eerdmans Books for Young Readers.

Cita Chicago Style (17a ed.)

Spinelli, Eileen, y Mary Newell DePalma. Now It Is Summer. Grand Rapids, MI: Eerdmans Books for Young Readers, 2011.

Cita MLA (8a ed.)

Spinelli, Eileen, y Mary Newell DePalma. Now It Is Summer. Eerdmans Books for Young Readers, 2011.