एपीए उद्धरण

A J Thomson. (1991). A practice English grammar: Exercises 1. New York: Oxford Univ.

शिकागो स्टाइल उद्धरण

A J Thomson. A Practice English Grammar: Exercises 1. New York: Oxford Univ, 1991.

एमएलए उद्धरण

A J Thomson. A Practice English Grammar: Exercises 1. New York: Oxford Univ, 1991.