Cita APA (7th ed.)

Gibbs, J. P. (1961). Urban Research Methods. D. Van Nostrand Company, Inc.

Cita Chicago (17th ed.)

Gibbs, Jack P. Urban Research Methods. Princeton, New Jersey: D. Van Nostrand Company, Inc, 1961.

Cita MLA (9th ed.)

Gibbs, Jack P. Urban Research Methods. D. Van Nostrand Company, Inc, 1961.