Citazione Stile APA (7a Edizione)

Napper, E., & Attenborough, D. (2019). Seven worlds, one planet. BBC Worldwide.

Citazione stile Chigago Style (17a edizione)

Napper, Emma, e David Attenborough. Seven Worlds, One Planet. London, England: BBC Worldwide, 2019.

Citatione MLA (9a ed.)

Napper, Emma, e David Attenborough. Seven Worlds, One Planet. BBC Worldwide, 2019.