Cita APA (7th ed.)
ebrary, Inc, & Sparks, P. R. (1991). Hurricane Elena, Gulf Coast, August 29-September 2, 1985. National Academy Press.
Cita Chicago (17th ed.)
ebrary, Inc, i Peter R. Sparks. Hurricane Elena, Gulf Coast, August 29-September 2, 1985. Washington, D.C.: National Academy Press, 1991.
Cita MLA (9th ed.)
ebrary, Inc, i Peter R. Sparks. Hurricane Elena, Gulf Coast, August 29-September 2, 1985. National Academy Press, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.