Cita APA (7th ed.)

Kuhre, W. L. (1998). ISO 14031: Environmental performance evaluation : practical tools and techniques for conducting an environmental performance evaluation. Prentice-Hall PTR.

Cita Chicago (17th ed.)

Kuhre, W. Lee. ISO 14031: Environmental Performance Evaluation : Practical Tools and Techniques for Conducting an Environmental Performance Evaluation. Upper Saddle river, NJ: Prentice-Hall PTR, 1998.

Cita MLA (9th ed.)

Kuhre, W. Lee. ISO 14031: Environmental Performance Evaluation : Practical Tools and Techniques for Conducting an Environmental Performance Evaluation. Prentice-Hall PTR, 1998.