Hudson,Travis. (2011). Living with earth: An introduction to environmental geology. Pearson education.
Chicago-стиль цитированияHudson,Travis. Living with Earth: An Introduction to Environmental Geology. Boston: Pearson education, 2011.
MLA-цитированиеHudson,Travis. Living with Earth: An Introduction to Environmental Geology. Pearson education, 2011.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.