Kohker, H. (1993). Statistics for business and economics. NY: HarperCollins College.
Stile di citazione ChicagoKohker, Heinz. Statistics for Business and Economics. NY: HarperCollins College, 1993.
Citazione MLAKohker, Heinz. Statistics for Business and Economics. NY: HarperCollins College, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.