Glover, S. L., & Wilson, H. (1941). Clays and shales of Washington. State printing plant.
Cita Chicago Style (17a ed.)Glover, Sheldon L., y Hewitt Wilson. Clays and Shales of Washington. Olympia: State printing plant, 1941.
Cita MLA (8a ed.)Glover, Sheldon L., y Hewitt Wilson. Clays and Shales of Washington. State printing plant, 1941.
Precaución: Estas citas no son 100% exactas.