K K SHRIVASTAVA. (2004). ENVIRONMENTAL EDUCATION PRINCIPLES CONCEPTS AND MANAGEMENT. KANISHKA PUBLISHERS.
استشهاد بنمط شيكاغوK K SHRIVASTAVA. ENVIRONMENTAL EDUCATION PRINCIPLES CONCEPTS AND MANAGEMENT. KANISHKA PUBLISHERS, 2004.
MLA استشهادK K SHRIVASTAVA. ENVIRONMENTAL EDUCATION PRINCIPLES CONCEPTS AND MANAGEMENT. KANISHKA PUBLISHERS, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.