एपीए उद्धरण

Levi, M. (1994). Study guide for Economics and the modern world. Lexington, MA: D.C. Heath.

शिकागो स्टाइल उद्धरण

Levi, Maurice. Study Guide for Economics and the Modern World. Lexington, MA: D.C. Heath, 1994.

एमएलए उद्धरण

Levi, Maurice. Study Guide for Economics and the Modern World. Lexington, MA: D.C. Heath, 1994.