एपीए उद्धरण

Enger, E. D. (2002). Environmental science: A study of interrelationships. Boston, MA: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Enger, Eldon D. Environmental Science: A Study of Interrelationships. Boston, MA: McGraw-Hill, 2002.

एमएलए उद्धरण

Enger, Eldon D. Environmental Science: A Study of Interrelationships. Boston, MA: McGraw-Hill, 2002.