एपीए उद्धरण

Korah, V. (1968). Monopolies and restrictive practices. Penguin books.

शिकागो स्टाइल उद्धरण

Korah, Valentine. Monopolies and Restrictive Practices. Englsnd: Penguin books, 1968.

एमएलए उद्धरण

Korah, Valentine. Monopolies and Restrictive Practices. Penguin books, 1968.