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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Washington State Association of County Commissioners. Convention, Washington State Association of County Engineers. Convention, và Washington State Association of County Administrators. Convention. Convention Yearbook. [Olympia, Wash.?]: The Associations, 1952.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Washington State Association of County Commissioners. Convention, et al. Convention Yearbook. The Associations, 1952.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.