APA (7th ed.) Citation

Botkin, D. B. (1987). Environment studies: Earth as a living planet. Merilll pub.

Chicago Style (17th ed.) Citation

Botkin, Daniel B. Environment Studies: Earth as a Living Planet. Melbourne: Merilll pub, 1987.

MLA (8th ed.) Citation

Botkin, Daniel B. Environment Studies: Earth as a Living Planet. Merilll pub, 1987.