Tohutoro APA (7th ed.)

Sadiq,Naeem, & Khan, A. H. ISO 14001 Step by step: A practical (2nd ed.). IT Governance,2019.

Tohutoru Kātū Chicago (17th ed.)

Sadiq,Naeem, me Asif Hayat Khan. ISO 14001 Step by Step: A Practical. 2nd ed. United Kingdom: IT Governance,2019.

Tohutoro MLA (9th ed.)

Sadiq,Naeem, me Asif Hayat Khan. ISO 14001 Step by Step: A Practical. 2nd ed. IT Governance,2019.