Citazione Stile APA (7a Edizione)

Freiberg, K. (2004). Guts: Companies that blow the doors off business as usual. Currency.

Citazione stile Chigago Style (17a edizione)

Freiberg, Kevin. Guts: Companies That Blow the Doors off Business as Usual. New york: Currency, 2004.

Citatione MLA (9a ed.)

Freiberg, Kevin. Guts: Companies That Blow the Doors off Business as Usual. Currency, 2004.