APA
(1980). Teacher's guide for environmental studies : Part II (Class IV). New Delhi, India: National Council of Educational Research and Training.
Chicago
1980. Teacher's guide for environmental studies : Part II (Class IV). New Delhi, India: National Council of Educational Research and Training.
Harvard
(1980). Teacher's guide for environmental studies : Part II (Class IV). New Delhi, India: National Council of Educational Research and Training.
MLA
Teacher's guide for environmental studies : Part II (Class IV). New Delhi, India: National Council of Educational Research and Training. 1980.
