APA (7th ed.) Citation

PBS (Firm),$4dst, & Kanopy (Firm),$4dst. (2013). Counting on Birds. PBS.

Chicago Style (17th ed.) Citation

PBS (Firm),$4dst, and Kanopy (Firm),$4dst. Counting on Birds. [San Francisco, California, USA]: PBS, 2013.

MLA (9th ed.) Citation

PBS (Firm),$4dst, and Kanopy (Firm),$4dst. Counting on Birds. PBS, 2013.