Cita APA (7a ed.)

PBS Distribution (Firm), Morgan, C., Moss, C., Colbeck, M., & Birkhead, M. (2010). Echo: An elephant to remember. PBS Distribution.

Cita Chicago Style (17a ed.)

PBS Distribution (Firm), Chris Morgan, Cynthia Moss, Martyn Colbeck, y Mike Birkhead. Echo: An Elephant to Remember. [United States]: PBS Distribution, 2010.

Cita MLA (8a ed.)

PBS Distribution (Firm), et al. Echo: An Elephant to Remember. PBS Distribution, 2010.

Precaución: Estas citas no son 100% exactas.