APA (7th ed.) Citation

PBS (Firm),$4dst, & Kanopy (Firm),$4dst. (2011). Counting on Birds - Saving Songbirds. PBS.

Chicago Style (17th ed.) Citation

PBS (Firm),$4dst, and Kanopy (Firm),$4dst. Counting on Birds - Saving Songbirds. [San Francisco, California, USA]: PBS, 2011.

MLA (9th ed.) Citation

PBS (Firm),$4dst, and Kanopy (Firm),$4dst. Counting on Birds - Saving Songbirds. PBS, 2011.