https://www.hachettebookgroup.com/titles/bjorn-billhardt/the-12-week-mba/9780306832369/
The 12-Week MBA by Bjorn Billhardt & Nathan Kracklauer | Hachette Book Group
Apr 9, 2026 - Hachette Book Group is a leading book publisher based in New York and a division of Hachette Livre, the third-largest publisher in the world.