APA aipamena

Hussain, M. (2014). Environment and Ecology Civil Services Examination. Access Publishing House.

Chicago Style aipamena

Hussain, Majid. Environment and Ecology Civil Services Examination. Access Publishing House, 2014.

MLA aipamena

Hussain, Majid. Environment and Ecology Civil Services Examination. Access Publishing House, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.