Cita APA (7a ed.)

Keene, C., & Birschbach, J. (2010). Nancy's mysterious letter (Unabridged.). Phoenix Books, Inc..

Cita Chicago Style (17a ed.)

Keene, Carolyn, y Jessie Birschbach. Nancy's Mysterious Letter. Unabridged. Beverly Hills: Phoenix Books, Inc., 2010.

Cita MLA (8a ed.)

Keene, Carolyn, y Jessie Birschbach. Nancy's Mysterious Letter. Unabridged. Phoenix Books, Inc., 2010.

Precaución: Estas citas no son 100% exactas.