Hashagen, R. (1986). Counties of the state of Washington. R. Hashagen.
Cita Chicago Style (17a ed.)Hashagen, Richard. Counties of the State of Washington. Spokane, Wash.: R. Hashagen, 1986.
Cita MLA (8a ed.)Hashagen, Richard. Counties of the State of Washington. R. Hashagen, 1986.
Precaución: Estas citas no son 100% exactas.