Mayo, R. F. (1986). A journey with Roy Mayo to the historical mining areas of Washington State: Liberty and Blewett. Nugget Enterprises.
Cita Chicago Style (17a ed.)Mayo, Roy F. A Journey with Roy Mayo to the Historical Mining Areas of Washington State: Liberty and Blewett. Enumclaw, WA: Nugget Enterprises, 1986.
Cita MLA (8a ed.)Mayo, Roy F. A Journey with Roy Mayo to the Historical Mining Areas of Washington State: Liberty and Blewett. Nugget Enterprises, 1986.
Precaución: Estas citas no son 100% exactas.