APA
Heyel C., . (1982). The Encyclopedia of management. Newyork: Van nostrand reinhold company.
Chicago
Heyel Carl,ed, . 1982. The Encyclopedia of management. Newyork: Van nostrand reinhold company.
Harvard
Heyel C., . (1982). The Encyclopedia of management. Newyork: Van nostrand reinhold company.
MLA
Heyel Carl,ed, . The Encyclopedia of management. Newyork: Van nostrand reinhold company. 1982.