Cita APA (7a ed.)

Hubbard, T., & Hubbard, H. V. (1929). Our cities today and tomorrow: A survey of planning and zoning progress in the United States. Harvard university press.

Cita Chicago Style (17a ed.)

Hubbard, Theodora, y Henry Vincent Hubbard. Our Cities Today and Tomorrow: A Survey of Planning and Zoning Progress in the United States. Cambridge: Harvard university press, 1929.

Cita MLA (9a ed.)

Hubbard, Theodora, y Henry Vincent Hubbard. Our Cities Today and Tomorrow: A Survey of Planning and Zoning Progress in the United States. Harvard university press, 1929.