Παραπομπή APA

Saxena, M. (1990). Environmental analysis water, soil and air (2ND.). Agro Botanical Publishers.

Παραπομπή Chicago Style

Saxena, M.M. Environmental Analysis Water, Soil and Air. 2ND. Bikaner: Agro Botanical Publishers, 1990.

Παραπομπή MLA

Saxena, M.M. Environmental Analysis Water, Soil and Air. 2ND. Agro Botanical Publishers, 1990.