APA (7th ed.) Citation

(2019). When whales walked: Journeys in deep time (Widescreen.). PBS.

Chicago Style (17th ed.) Citation

When Whales Walked: Journeys in Deep Time. Widescreen. [Arlington, Virginia]: PBS, 2019.

MLA (8th ed.) Citation

When Whales Walked: Journeys in Deep Time. Widescreen. PBS, 2019.

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