Cita APA (7a ed.)

Aston, D. H., & Long, S. (2007). A seed is sleepy. Chronicle Books.

Cita Chicago Style (17a ed.)

Aston, Dianna Hutts, y Sylvia Long. A Seed Is Sleepy. San Francisco: Chronicle Books, 2007.

Cita MLA (8a ed.)

Aston, Dianna Hutts, y Sylvia Long. A Seed Is Sleepy. Chronicle Books, 2007.

Precaución: Estas citas no son 100% exactas.