Lua APA (7ú heag.)

O'Brien,Derek. (2014). Bournvita quiz contest quiz book 2014 (NA.). Rupa Publication.

Lua i Stíl Chicago (17ú heag.)

O'Brien,Derek. Bournvita Quiz Contest Quiz Book 2014. NA. New Delhi: Rupa Publication, 2014.

Lua MLA (9ú heag.)

O'Brien,Derek. Bournvita Quiz Contest Quiz Book 2014. NA. Rupa Publication, 2014.

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