Hubbard, D. W. (2014). How to measure anything: Finding the value of "intangibles" in business (2nd ed.). Wiley. https://doi.org/10.1002/9781118983836
Chicago-Zitierstil (17. Ausg.)Hubbard, Douglas W. How to Measure Anything: Finding the Value of "Intangibles" in Business. 2nd ed. Hoboken, N.J: Wiley, 2014. https://doi.org/10.1002/9781118983836.
MLA-Zitierstil (9. Ausg.)Hubbard, Douglas W. How to Measure Anything: Finding the Value of "Intangibles" in Business. 2nd ed. Wiley, 2014. https://doi.org/10.1002/9781118983836.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.