National Conference on City Planning (21st : Buffalo and Niagara Falls, N.Y.). (1929). Planning problems of town, city and region: Papers and discussions at the twenty-first National Conference on City Planning, held at Buffalo and Niagara Falls, New York, May 20 to 23, 1929. W.F. Fell for the Conference.
Cita Chicago (17th ed.)National Conference on City Planning (21st : Buffalo and Niagara Falls, N.Y.). Planning Problems of Town, City and Region: Papers and Discussions at the Twenty-first National Conference on City Planning, Held at Buffalo and Niagara Falls, New York, May 20 to 23, 1929. Philadelphia: W.F. Fell for the Conference, 1929.
Cita MLA (8th ed.)National Conference on City Planning (21st : Buffalo and Niagara Falls, N.Y.). Planning Problems of Town, City and Region: Papers and Discussions at the Twenty-first National Conference on City Planning, Held at Buffalo and Niagara Falls, New York, May 20 to 23, 1929. W.F. Fell for the Conference, 1929.