एपीए उद्धरण

Langan, J. (2005). College writing skills (6th ed.). New York: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Langan, John. College Writing Skills. 6th ed. New York: McGraw-Hill, 2005.

एमएलए उद्धरण

Langan, John. College Writing Skills. 6th ed. New York: McGraw-Hill, 2005.