Cita APA (7a ed.)

Downs, S. K., & Warren, S. M. (2005). Marina. Barbour Publishing.

Cita Chicago Style (17a ed.)

Downs, Susan K., y Susan May Warren. Marina. Uhrichsville, Ohio: Barbour Publishing, 2005.

Cita MLA (9a ed.)

Downs, Susan K., y Susan May Warren. Marina. Barbour Publishing, 2005.