एपीए उद्धरण

(2009). Environment 09/10. Boston: McGraw-Hill Higher Education.

शिकागो स्टाइल उद्धरण

Environment 09/10. Boston: McGraw-Hill Higher Education, 2009.

एमएलए उद्धरण

Environment 09/10. Boston: McGraw-Hill Higher Education, 2009.