Washington State Association of County Commissioners. Convention, Washington State Association of County Engineers. Convention, & Washington State Association of County Administrators. Convention. (1952). Convention yearbook. The Associations.
Cita Chicago Style (17a ed.)Washington State Association of County Commissioners. Convention, Washington State Association of County Engineers. Convention, y Washington State Association of County Administrators. Convention. Convention Yearbook. [Olympia, Wash.?]: The Associations, 1952.
Cita MLA (8a ed.)Washington State Association of County Commissioners. Convention, et al. Convention Yearbook. The Associations, 1952.
Precaución: Estas citas no son 100% exactas.