Cita APA

Johnson, W. H., & Steere, W. C. (1974). The environmental challenge. Holt, Rinehart and Winston.

Citación estilo Chicago

Johnson, Willis Hugh, and William Campbell Steere. The Environmental Challenge. New York: Holt, Rinehart and Winston, 1974.

Cita MLA

Johnson, Willis Hugh, and William Campbell Steere. The Environmental Challenge. Holt, Rinehart and Winston, 1974.

Warning: These citations may not always be 100% accurate.