Johnson, G. B. (2009). Essentials of the living world. 3rd ed: McGraw-Hill Education.
استشهاد بنمط شيكاغوJohnson, George B. Essentials of the Living World. 3rd ed: McGraw-Hill Education, 2009.
MLA استشهادJohnson, George B. Essentials of the Living World. 3rd ed: McGraw-Hill Education, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.