Gaya APA

Kogel, J, E, ., [. (2006). Industrial minerals & rocks (7th ed.). USA: Society for Mining, Metallurgy, and Exploration, Inc. (SME).

Gaya MLA

Kogel, Jessica, Elzea, ..., [et.al]. "Industrial minerals & rocks". 7th ed. USA: Society for Mining, Metallurgy, and Exploration, Inc. (SME), 2006. Text.