APA引文

(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引文

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

警告：這些引文格式不一定是100％准確.