APA (7. basım) Alıntı

SINGH P P. (2004). ENVIRONMENT AND POLLUTION EDUCATION. DEEP & DEEP PUBLICATIONS.

Chicago Style (17. basım) Atıf

SINGH P P. ENVIRONMENT AND POLLUTION EDUCATION. NEW DELHI: DEEP & DEEP PUBLICATIONS, 2004.

MLA (9th ed.) Atıf

SINGH P P. ENVIRONMENT AND POLLUTION EDUCATION. DEEP & DEEP PUBLICATIONS, 2004.