Gaya APA

HOBBS, B, E., MEANS, W, D. (1976). An Outline of Structural Geology . New York: Jhon Wiley and Sons.

Gaya MLA

HOBBS, Bruce, E.., MEANS, Winthrop, D.. "An Outline of Structural Geology". New York: Jhon Wiley and Sons, 1976. Teks.