एपीए उद्धरण

Aas, O. (2008). Global challenges in recreational fisheries. Blackwell Publishing.

शिकागो स्टाइल उद्धरण

Aas, Oystein. Global Challenges in Recreational Fisheries. Oxford: Blackwell Publishing, 2008.

एमएलए उद्धरण

Aas, Oystein. Global Challenges in Recreational Fisheries. Blackwell Publishing, 2008.