Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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