एपीए उद्धरण

(1972). guide to the natural world and index to the Life nature Library. Time-Life Books.

शिकागो स्टाइल उद्धरण

Guide to the Natural World and Index to the Life Nature Library. New York: Time-Life Books, 1972.

एमएलए उद्धरण

Guide to the Natural World and Index to the Life Nature Library. Time-Life Books, 1972.