SINGH P P. (2004). ENVIRONMENT AND POLLUTION EDUCATION. DEEP & DEEP PUBLICATIONS.
Chicagoスタイル(17版)引用形式SINGH P P. ENVIRONMENT AND POLLUTION EDUCATION. NEW DELHI: DEEP & DEEP PUBLICATIONS, 2004.
MLA(9版)引用形式SINGH P P. ENVIRONMENT AND POLLUTION EDUCATION. DEEP & DEEP PUBLICATIONS, 2004.
警告: この引用は必ずしも正確ではありません.