एपीए उद्धरण

Attar Chand. (1983). World energy order 1924- 1983. Academic Press.

शिकागो स्टाइल उद्धरण

Attar Chand. World Energy Order 1924- 1983. Delhi: Academic Press, 1983.

एमएलए उद्धरण

Attar Chand. World Energy Order 1924- 1983. Academic Press, 1983.