Gaya APA

KUHRE, W, L., MAYA, G. (1996). Sertifikasi ISO 14001 : sistem manajemen lingkungan = ISO 14001 Certification : environmental management systems . Jakarta: Prenhallindo.

Gaya MLA

KUHRE, W., Lee., MAYA, Geertruida. "Sertifikasi ISO 14001 : sistem manajemen lingkungan = ISO 14001 Certification : environmental management systems". Jakarta: Prenhallindo, 1996. Text.