Schaefer, Mark W. KNOWN : the handbook for building and unleashing your personal brand in the digital age / Mark W Schaefer - [not identified] Mark W. Schaefer 2017 - 255 p. ISBN: 9780692816066 Subjects--Topical Terms: Career development.Branding (Marketing)Reputation. Dewey Class. No.: 650.1 / Sc Kn