Putnam, R. D. Bowling alone: The collapse and revival of american community. Simon and Schuster.
Citazione stile Chigago Style (17a edizione)Putnam, Robert D. Bowling Alone: The Collapse and Revival of American Community. New York (State): Simon and Schuster.
Citatione MLA (9a ed.)Putnam, Robert D. Bowling Alone: The Collapse and Revival of American Community. Simon and Schuster.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.