Pieterson, W. (2019) A starting guide on creating KPIs and measuring success for PES : getting started with key performance indicators [cd]. Luxemburg: Amt für Veröffentlichungen. doi:10.2767/4156.
Chicago Manual of Style 17th edition (full note)Pieterson, Willem. A starting guide on creating KPIs and measuring success for PES : getting started with key performance indicators. Cd. Luxemburg: Amt für Veröffentlichungen, [2019?], Luxemburg: Amt für Veröffentlichungen, [2019?]. https://doi.org/10.2767/4156.
American Psychological Association 7th editionPieterson, W. (ca. 2019). A starting guide on creating KPIs and measuring success for PES : getting started with key performance indicators [Cd]. Amt für Veröffentlichungen. https://doi.org/10.2767/4156
Modern Language Association 9th editionPieterson, W. A starting guide on creating KPIs and measuring success for PES : getting started with key performance indicators. cd, Amt für Veröffentlichungen, 2019, https://doi.org/10.2767/4156.
ISO-690 (author-date, Deutsch)PIETERSON, Willem, 2019. A starting guide on creating KPIs and measuring success for PES : getting started with key performance indicators. Luxemburg: Amt für Veröffentlichungen. ISBN 9789279988776