Washington State Planning Council. (1938). A survey of the common school system of Washington with suggested first steps toward its progressive development and improvement.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Washington State Planning Council. A Survey of the Common School System of Washington with Suggested First Steps Toward Its Progressive Development and Improvement. [Olympia, 1938.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Washington State Planning Council. A Survey of the Common School System of Washington with Suggested First Steps Toward Its Progressive Development and Improvement. 1938.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.