एपीए उद्धरण

Howard,Peter. (2006). Mistakes to avoid in English. Orient longman.

शिकागो स्टाइल उद्धरण

Howard,Peter. Mistakes to Avoid in English. Hydrabad: Orient longman, 2006.

एमएलए उद्धरण

Howard,Peter. Mistakes to Avoid in English. Orient longman, 2006.