Hollnagel, E. (2009). The ETTO principle: Efficiency-thoroughness trade-off : why things that go right sometimes go wrong. Ashgate.
Chicago-Zitierstil (17. Ausg.)Hollnagel, Erik. The ETTO Principle: Efficiency-thoroughness Trade-off : Why Things That Go Right Sometimes Go Wrong. Farnham, England: Ashgate, 2009.
MLA-Zitierstil (9. Ausg.)Hollnagel, Erik. The ETTO Principle: Efficiency-thoroughness Trade-off : Why Things That Go Right Sometimes Go Wrong. Ashgate, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.