एपीए उद्धरण

Sokolov, V. (1972). Petroleum. Mir publishers.

शिकागो स्टाइल उद्धरण

Sokolov, V. Petroleum. Moscow: Mir publishers, 1972.

एमएलए उद्धरण

Sokolov, V. Petroleum. Mir publishers, 1972.