Παραπομπή APA

UNEP. (1996). Industry and environment emission standards and guidelines information clearing house9IE-ESGIC) vol-3 b(UNEP).

Παραπομπή Chicago Style

UNEP. Industry and Environment Emission Standards and Guidelines Information Clearing House9IE-ESGIC) Vol-3 B(UNEP). Paris, UNEP, 1996.

Παραπομπή MLA

UNEP. Industry and Environment Emission Standards and Guidelines Information Clearing House9IE-ESGIC) Vol-3 B(UNEP). 1996.