APA-viite (7. p.)

Enger, E. D., & Smith, B. F. (2022). Environmental science: A study of interrelationships (Sixteenth edition.). McGraw-Hill Education.

Chicago-viite (17. p.)

Enger, Eldon D., ja Bradley F. Smith. Environmental Science: A Study of Interrelationships. Sixteenth edition. Dubuque: McGraw-Hill Education, 2022.

MLA-viite (9. p.)

Enger, Eldon D., ja Bradley F. Smith. Environmental Science: A Study of Interrelationships. Sixteenth edition. McGraw-Hill Education, 2022.