Gaya APA
Trivedi,P.R, (1999).
Encyclopaedia of World Environment Vol.5 :Basic Environment Laws. (Volume 5).
New Delhi:
A.P.H Publishing Corporation.
Gaya MLA
Trivedi,P.R, .
Encyclopaedia of World Environment Vol.5 :Basic Environment Laws..
Volume 5
New Delhi:
A.P.H Publishing Corporation,
1999.
Text.