APA (7th ed.) Zitazioa

ebrary, Inc, Schuster, R. L., & Egred, J. (1991). The March 5, 1987, Ecuador earthquakes: Mass wasting and socioeconomic effects. National Academy Press.

Chicago Style (17th ed.) Zitazioa

ebrary, Inc, Robert L. Schuster, eta José Egred. The March 5, 1987, Ecuador Earthquakes: Mass Wasting and Socioeconomic Effects. Washington, D.C.: National Academy Press, 1991.

MLA (9th ed.) Zitazioa

ebrary, Inc, et al. The March 5, 1987, Ecuador Earthquakes: Mass Wasting and Socioeconomic Effects. National Academy Press, 1991.