APA

Wahlstrom E. E., . (1950). Introduction to theorical igneous petrology. New York: Wiley.

Chicago

Wahlstrom Ernest E, . 1950. Introduction to theorical igneous petrology. New York: Wiley.

Harvard

Wahlstrom E. E., . (1950). Introduction to theorical igneous petrology. New York: Wiley.

MLA

Wahlstrom Ernest E, . Introduction to theorical igneous petrology. New York: Wiley. 1950.