Steffens, G., & Probert, C. (2015). The SMART criteria: Specific, measureable, assignable, relevant, time based = S.M.A.R.T. criteria. 50Minutes.
Chicago-Zitierstil (17. Ausg.)Steffens, Guillaume, und Carly Probert. The SMART Criteria: Specific, Measureable, Assignable, Relevant, Time Based = S.M.A.R.T. Criteria. [Place of publication not identified]: 50Minutes, 2015.
MLA-Zitierstil (9. Ausg.)Steffens, Guillaume, und Carly Probert. The SMART Criteria: Specific, Measureable, Assignable, Relevant, Time Based = S.M.A.R.T. Criteria. 50Minutes, 2015.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.