Cita APA (7a ed.)

Zharen, W. v. (1996). ISO 14000: Understanding the environmental standards. Government Institutes.

Cita Chicago Style (17a ed.)

Zharen, WM von. ISO 14000: Understanding the Environmental Standards. Maryland: Government Institutes, 1996.

Cita MLA (9a ed.)

Zharen, WM von. ISO 14000: Understanding the Environmental Standards. Government Institutes, 1996.