Gaya APA

Yardley, B, W., UPT02138, . (1999). An introduction to metamorphic petrology (cet. 1). England: Pearson Education.

Gaya MLA

Yardley, Bruce, W.D., UPT02138, . "An introduction to metamorphic petrology". cet. 1 England: Pearson Education, 1999. Text.