Cita APA (7a ed.)

Edwards, A. J. (2004). ISO 14001 environmental certification step by step. Elsevier Butterworth-Heinemann.

Cita Chicago Style (17a ed.)

Edwards, A. J. ISO 14001 Environmental Certification Step by Step. Amsterdam: Elsevier Butterworth-Heinemann, 2004.

Cita MLA (9a ed.)

Edwards, A. J. ISO 14001 Environmental Certification Step by Step. Elsevier Butterworth-Heinemann, 2004.