एपीए उद्धरण

Johnson, G. B. (. B. (2000). The living world. McGraw-Hill.

शिकागो स्टाइल उद्धरण

Johnson, George B. (George Brooks). The Living World. McGraw-Hill, 2000.

एमएलए उद्धरण

Johnson, George B. (George Brooks). The Living World. McGraw-Hill, 2000.