APA (7th ed.) Citation

Johannsen, A. (1931). A descriptive petrography of the igneous rocks ... University of Chicago Press.

Chicago Style (17th ed.) Citation

Johannsen, Albert. A Descriptive Petrography of the Igneous Rocks ... Chicago: University of Chicago Press, 1931.

MLA (9th ed.) Citation

Johannsen, Albert. A Descriptive Petrography of the Igneous Rocks ... University of Chicago Press, 1931.

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