APA

Trivedi P R,, . (1994). Natural environment and constitution of India. New Delhi: Ashish Publishing House.

Chicago

Trivedi P R,, . 1994. Natural environment and constitution of India. New Delhi: Ashish Publishing House.

Harvard

Trivedi P R,, . (1994). Natural environment and constitution of India. New Delhi: Ashish Publishing House.

MLA

Trivedi P R,, . Natural environment and constitution of India. New Delhi: Ashish Publishing House. 1994.