Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (9th εκδ.)

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