 War at Work : Applying Sun Tzu 's Art of War in Today Business World ( 1990 ) 
 War at Work : Applying Sun Tzu <a href='null_genetive' title='1'><mark>'s</mark></a>Art of War in Today Business World ( 1990 ) 
War at Work : Applying Sun Tzu  Art of War in Today bizness World ( 1990 )