Gaya APA

Batten, R, H, D, J, ;, R, L. (1988). Evolution of the earth (ed. 4). New York: Mc Graw Hill.

Gaya MLA

Batten, Robert, H., Dott,, Jr., ;, Roger, Lyman. "Evolution of the earth". ed. 4 New York: Mc Graw Hill, 1988. Text.