Sharma, J. P. Environmental Studies (3rd ed.). University Science Press.
Chicago ZitierstilSharma, J P. Environmental Studies. 3rd ed. Bangalore: University Science Press.
MLA ZitierstilSharma, J P. Environmental Studies. 3rd ed. University Science Press.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.