Krause, Donald G. The book of five rings for executives [electronic resource] : Musashi's classic book of competitive tactics / Donald G. Krause. - London ; Naperville, Ill. : Nicholas Brealey Publishing, 1999. - 1 digital resource (159 p.) 22 cm. ISBN: 1857881346 (alk. paper) LCCN: 98034041 Subjects--Topical Terms: Executives--Psychology.Competition (Psychology)Swordplay.Martial arts. LC Class. No.: HD38.2 / .K73 1999 Dewey Class. No.: 658.4