Richard Koch

  MLA works cited: Chief , Chuka. “Richard Koch.” Wikipedia, Wikimedia Foundation, 3 July 2022, https://en.m.wikipedia.org/wiki/Richard_Koch. Koch, Richard. “About – Richard Koch: Author, Investor, Speaker.” About – Richard Koch | Author, Investor, Speaker, 2020, https://richardkoch.net/about. Koch, Richard. The 80/20 Principle: … Continue reading Richard Koch