एपीए उद्धरण

Pika, S., & Bugnyar, T. (2011). The use of referential gestures in ravens (Corvus corax) in the wild. Nat Commun.

शिकागो स्टाइल उद्धरण

Pika, Simone, और Thomas Bugnyar. "The Use of Referential Gestures in Ravens (Corvus Corax) in the Wild." Nat Commun 2011.

एमएलए उद्धरण

Pika, Simone, और Thomas Bugnyar. "The Use of Referential Gestures in Ravens (Corvus Corax) in the Wild." Nat Commun 2011.