APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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