एपीए उद्धरण

Peterson, P. W. (2003). Developing writing: Writing skill practice book for EFL. U.S: United States Infomation Agency (USIA).

शिकागो स्टाइल उद्धरण

Peterson, Patricia Wilcox. Developing Writing: Writing Skill Practice Book for EFL. U.S: United States Infomation Agency (USIA), 2003.

एमएलए उद्धरण

Peterson, Patricia Wilcox. Developing Writing: Writing Skill Practice Book for EFL. U.S: United States Infomation Agency (USIA), 2003.