APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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