Dyfyniad APA

Bertuglia, C. S. (1987). Urban systems: Contemporary approaches to modelling. Croom Helm.

Dyfyniad Arddull Chicago

Bertuglia, C. S. Urban Systems: Contemporary Approaches to Modelling. London: Croom Helm, 1987.

Dyfyniad MLA

Bertuglia, C. S. Urban Systems: Contemporary Approaches to Modelling. Croom Helm, 1987.

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