एपीए उद्धरण

J A Eusebio. (1980). Pig production in the tropics. Essex.

शिकागो स्टाइल उद्धरण

J A Eusebio. Pig Production in the Tropics. Essex, 1980.

एमएलए उद्धरण

J A Eusebio. Pig Production in the Tropics. Essex, 1980.