APA (7th ed.) Citation

Knapp, B. J., Ross, S. R., & McCrae, D. L. (1989). Challenge of the human environment. Longman.

Chicago Style (17th ed.) Citation

Knapp, Brian J., Simon R.J Ross, and Duncan L.R McCrae. Challenge of the Human Environment. Harlow: Longman, 1989.

MLA (9th ed.) Citation

Knapp, Brian J., et al. Challenge of the Human Environment. Longman, 1989.