Maytin, I. L., & Gilkeson, R. H. (1962). State of Washington engineering soils manual: Soils of Spokane County. Washington State University.
Cita Chicago Style (17a ed.)Maytin, Iury L., y Raymond H. Gilkeson. State of Washington Engineering Soils Manual: Soils of Spokane County. Pullman: Washington State University, 1962.
Cita MLA (8a ed.)Maytin, Iury L., y Raymond H. Gilkeson. State of Washington Engineering Soils Manual: Soils of Spokane County. Washington State University, 1962.
Precaución: Estas citas no son 100% exactas.