Smith, P. C. (1970). Areal differentiation and the urbanization process in lowland Luzon. The University of Chicago.
Citazione stile Chigago Style (17a edizione)Smith, Peter Colin. Areal Differentiation and the Urbanization Process in Lowland Luzon. Chicago: The University of Chicago, 1970.
Citatione MLA (9a ed.)Smith, Peter Colin. Areal Differentiation and the Urbanization Process in Lowland Luzon. The University of Chicago, 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.