Gaya APA

Klein, C., Philpotts, A, R. (2013, 2017). Earth Materials introdcution to mineralogy and petrology (E-Book) . United States of America: Cambridge University Press.

Gaya MLA

Klein, Cornelis., Philpotts, Anthony, R.. "Earth Materials introdcution to mineralogy and petrology (E-Book)". United States of America: Cambridge University Press, 2013, 2017. E-book.