Cita APA (7a ed.)

Hansen, P., & Henderson, J. V. (1987). Systems of cities and facility location. Harwood.

Cita Chicago Style (17a ed.)

Hansen, P., y J. Vernon Henderson. Systems of Cities and Facility Location. Chur, Switzerland ; New York: Harwood, 1987.

Cita MLA (8a ed.)

Hansen, P., y J. Vernon Henderson. Systems of Cities and Facility Location. Harwood, 1987.