Life Books (Firm). (2002). The American spirit: Meeting the challenge of September 11. Life Books.
Citazione stile Chigago Style (17a edizione)Life Books (Firm). The American Spirit: Meeting the Challenge of September 11. New York: Life Books, 2002.
Citatione MLA (9a ed.)Life Books (Firm). The American Spirit: Meeting the Challenge of September 11. Life Books, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.