APA (7th ed.) Citation

Hornsby, G., & Graves, R. (2012). Seven ages of starlight. British Broadcasting Corporation (BBC).

Chicago Style (17th ed.) Citation

Hornsby, Gaby, and Rupert Graves. Seven Ages of Starlight. London, England: British Broadcasting Corporation (BBC), 2012.

MLA (9th ed.) Citation

Hornsby, Gaby, and Rupert Graves. Seven Ages of Starlight. British Broadcasting Corporation (BBC), 2012.

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