APA Style
Duggal, K.N.. (2008).
Elements of environmental engineering .
India.:
S.Chand,.
Chicago Style
Duggal, K.N..
Elements of environmental engineering.
India.:
S.Chand,,
2008.
Book.
MLA Style
Duggal, K.N..
Elements of environmental engineering.
India.:
S.Chand,,
2008.
Book.
Turabian Style
Duggal, K.N..
Elements of environmental engineering.
India.:
S.Chand,,
2008.
Book.