APA引文

Downer, J., & Tennant, D. (2014). Earthflight. BBC Earth.

Chicago Style (17th ed.) Citation

Downer, John, and David Tennant. Earthflight. [London?]: BBC Earth, 2014.

MLA引文

Downer, John, and David Tennant. Earthflight. BBC Earth, 2014.

警告：這些引文格式不一定是100％准確.