Hudson,Travis. (2011). Living with earth: An introduction to environmental geology. Pearson education.
استشهاد بنمط شيكاغوHudson,Travis. Living with Earth: An Introduction to Environmental Geology. Boston: Pearson education, 2011.
MLA استشهادHudson,Travis. Living with Earth: An Introduction to Environmental Geology. Pearson education, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.