APA (7th ed.) Citation

Welton, J. E. (1984). SEM petrology atlas. American Association of Petroleum Geologists.

Chicago Style (17th ed.) Citation

Welton, Joann E. SEM Petrology Atlas. Tulsa, Okla.: American Association of Petroleum Geologists, 1984.

MLA (9th ed.) Citation

Welton, Joann E. SEM Petrology Atlas. American Association of Petroleum Geologists, 1984.