APA
Koch R., . (2002). 80/20 revolution. London: Nicholas Brealey Publishing.
Chicago
Koch Richard, . 2002. 80/20 revolution. London: Nicholas Brealey Publishing.
Harvard
Koch R., . (2002). 80/20 revolution. London: Nicholas Brealey Publishing.
MLA
Koch Richard, . 80/20 revolution. London: Nicholas Brealey Publishing. 2002.