APA استشهاد

Husain, M. (2014). Environment and ecology: Biodiversity, climate change and disaster management:for civil services examination (2nd ed.). Access Publishing.

استشهاد بنمط شيكاغو

Husain, Majid. Environment and Ecology: Biodiversity, Climate Change and Disaster Management:for Civil Services Examination. 2nd ed. New Delhi: Access Publishing, 2014.

MLA استشهاد

Husain, Majid. Environment and Ecology: Biodiversity, Climate Change and Disaster Management:for Civil Services Examination. 2nd ed. Access Publishing, 2014.