Hubbard, D. W. (2014). How to measure anything: Finding the value of "intangibles" in business (Third edition.). John Wiley & Sons, Inc.
Chicago-Zitierstil (17. Ausg.)Hubbard, Douglas W. How to Measure Anything: Finding the Value of "Intangibles" in Business. Third edition. Hoboken, New Jersey: John Wiley & Sons, Inc, 2014.
MLA-Zitierstil (9. Ausg.)Hubbard, Douglas W. How to Measure Anything: Finding the Value of "Intangibles" in Business. Third edition. John Wiley & Sons, Inc, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.