Styl cytowania APA

SINGH M.K. (1989). ENVIRONMENTAL CHANGES AND DEVELOPMENT. CHUGH PUBLICATIONS.

Styl cytowania Chicago

SINGH M.K. ENVIRONMENTAL CHANGES AND DEVELOPMENT. ALLAHABAD: CHUGH PUBLICATIONS, 1989.

Styl cytowania MLA

SINGH M.K. ENVIRONMENTAL CHANGES AND DEVELOPMENT. CHUGH PUBLICATIONS, 1989.