Consulting Am WendepunktPeter Wollsching-Strobel, Sven Werkmann, Petra Sternecker · First published 2024Open the Tome
Die LeistungsformelPeter Wollsching-Strobel, Ulrike Schott, Ulrike Wollsching-Strobel, Petra Sternecker, Frank Hänsel · First published 2009Open the Tome
