Jackson, N., & Penn, P. Dictionary of natural resources and their principal uses/2nd ed (2nd ed.).
استشهاد بنمط شيكاغوJackson, Nora, و Philip Penn. Dictionary of Natural Resources and Their Principal Uses/2nd Ed. 2nd ed.
MLA استشهادJackson, Nora, و Philip Penn. Dictionary of Natural Resources and Their Principal Uses/2nd Ed. 2nd ed.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.