Dyfyniad APA

Hansen,Pierre. (1987). Systems of cities and facility location. Harwood Academic.

Dyfyniad Arddull Chicago

Hansen,Pierre. Systems of Cities and Facility Location. London: Harwood Academic, 1987.

Dyfyniad MLA

Hansen,Pierre. Systems of Cities and Facility Location. Harwood Academic, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.