Whitelaw, K. (1997). ISO 14001 environmental systems handbook. Butterworth Heinemann.
Citazione stile Chigago Style (17a edizione)Whitelaw, Ken. ISO 14001 Environmental Systems Handbook. Oxford; Boston: Butterworth Heinemann, 1997.
Citatione MLA (9a ed.)Whitelaw, Ken. ISO 14001 Environmental Systems Handbook. Butterworth Heinemann, 1997.