APA (7e ed.) Bronvermelding

Johnson, C. E. (1972). The natural world: Chaos and conservation. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Johnson, Cecil E. The Natural World: Chaos and Conservation. New York: McGraw-Hill, 1972.

MLA (8e ed.) Bronvermelding

Johnson, Cecil E. The Natural World: Chaos and Conservation. McGraw-Hill, 1972.