APA (7th ed.) Zitazioa
Hollnagel, E. (2009). The ETTO principle: Efficiency-thoroughness trade-off : why things that go right sometimes go wrong. Ashgate.
Chicago Style (17th ed.) Zitazioa
Hollnagel, Erik. The ETTO Principle: Efficiency-thoroughness Trade-off : Why Things That Go Right Sometimes Go Wrong. Farnham, England ; Burlington, VT: Ashgate, 2009.
MLA (9th ed.) Zitazioa
Hollnagel, Erik. The ETTO Principle: Efficiency-thoroughness Trade-off : Why Things That Go Right Sometimes Go Wrong. Ashgate, 2009.
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