Darwent, D. F. (1970). Externality, agglomeration economies and city size. Institute of Urban and Regional Development.
Citazione stile Chigago Style (17a edizione)Darwent, David F. Externality, Agglomeration Economies and City Size. [Berkeley: Institute of Urban and Regional Development, 1970.
Citatione MLA (9a ed.)Darwent, David F. Externality, Agglomeration Economies and City Size. Institute of Urban and Regional Development, 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.