Cita APA (7th ed.)
Petroski, H. To Forgive Design: Understanding Failure. Belknap : Harvard University.
Cita Chicago (17th ed.)
Petroski, Henry. To Forgive Design: Understanding Failure. Cambridge, EUA: Belknap : Harvard University.
Cita MLA (9th ed.)
Petroski, Henry. To Forgive Design: Understanding Failure. Belknap : Harvard University.
Atenció: Aquestes cites poden no estar 100% correctes.