Spiegel, H. B. C. (1968). Citizen participation in urban development. Center for Community Affairs, NTL Institute for Applied Behavioral Science.
Citazione stile Chigago Style (17a edizione)Spiegel, Hans B. C. Citizen Participation in Urban Development. [Washington]: Center for Community Affairs, NTL Institute for Applied Behavioral Science, 1968.
Citatione MLA (9a ed.)Spiegel, Hans B. C. Citizen Participation in Urban Development. Center for Community Affairs, NTL Institute for Applied Behavioral Science, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.