استشهادات التسجيلة

APA استشهاد

Cunningham, W. P. (2003). Environmental science: A global concern. Boston: McGraw-Hill.

استشهاد بنمط شيكاغو

Cunningham, William P. Environmental Science: A Global Concern. Boston: McGraw-Hill, 2003.

MLA استشهاد

Cunningham, William P. Environmental Science: A Global Concern. Boston: McGraw-Hill, 2003.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.

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