Lua APA (7ú heag.)
Enger, E. D., & Smith, B. F. (2004). Environmental science: A study of interrelationships (9th ed.). McGraw-Hill Higher Education.
Lua i Stíl Chicago (17ú heag.)
Enger, Eldon D., agus Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Boston: McGraw-Hill Higher Education, 2004.
Lua MLA (9ú heag.)
Enger, Eldon D., agus Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. McGraw-Hill Higher Education, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.