HBR's 10 MUST READS : On Entrepreneurship and Startups / by Butler, Timothy, contributor, Sahlman, William A., contributor, Blank, Steve, contributor, Winarsky, Norman, contributor, Ignatius, Adi, contributor, Mulcahy, Diane, contributor, Ulukaya, Hamdi, contributor, Hagiu, Andrei, contributor, Rothman, Simon, contributor, Sullivan, Tim, contributor, Ruback, Richard S., contributor, Yudkoff, Royce, contributor, Wasserman, Noam, contributor