APA Citation

Howell Williams, F. J. T. Petrology An introduction to the study of rocks in sections. W.H. Freeman and Co.

Chicago Style Citation

Howell Williams, Francis J. Turner. Petrology An Introduction to the Study of Rocks in Sections. W.H. Freeman and Co.

MLA Citation

Howell Williams, Francis J. Turner. Petrology An Introduction to the Study of Rocks in Sections. W.H. Freeman and Co.

Warning: These citations may not always be 100% accurate.