APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.