Gaya APA
et.al., C, G, V, &, M, W. (2007).
Inside Earth .
Boston, Massachusetts:
Pearson Education, Inc.
Gaya MLA
et.al., Carole, Garbuny, Vogel, &, Michael, Wysession.
"Inside Earth".
Boston, Massachusetts:
Pearson Education, Inc,
2007.
Text / Book.