Gaya APA

al, M, W, E. (2005). Prentince Hall Science Explorer: Earth's Changing Surface (Cet. 1). Boston: Pearson Prentice Hall.

Gaya MLA

al, Michael, Wysession, Et. "Prentince Hall Science Explorer: Earth's Changing Surface". Cet. 1 Boston: Pearson Prentice Hall, 2005. Text.