Παραπομπή APA

Fouzia Ishaq & Khan, A. (2014). Encyclopedia of environmental science. Discovery Publishing House.

Παραπομπή Chicago Style

Fouzia Ishaq και Amir Khan. Encyclopedia of Environmental Science. New Delhi: Discovery Publishing House, 2014.

Παραπομπή MLA

Fouzia Ishaq και Amir Khan. Encyclopedia of Environmental Science. Discovery Publishing House, 2014.