Sladen, E. (1965). Modern commerce; a course in commerce for advanced students (7th ed.). Pitman.
Chicago-referens (17:e uppl.)Sladen, Edward. Modern Commerce; a Course in Commerce for Advanced Students. 7th ed. London: Pitman, 1965.
MLA-referens (9:e uppl.)Sladen, Edward. Modern Commerce; a Course in Commerce for Advanced Students. 7th ed. Pitman, 1965.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.