Cita APA

Williams, H. n. 1., & Williams, H. n. 1. (1954). Petrography: An introduction to the study of rocks in thin sections. San Francisco: W.H. Freeman.

Citación estilo Chicago

Williams, Howel n. 1898, y Howel n. 1898 Williams. Petrography: An Introduction to the Study of Rocks in Thin Sections. San Francisco: W.H. Freeman, 1954.

Cita MLA

Williams, Howel n. 1898, y Howel n. 1898 Williams. Petrography: An Introduction to the Study of Rocks in Thin Sections. San Francisco: W.H. Freeman, 1954.