Không rõ. (2009). Applied Statistics in Business and Economics. NOTNXB.
Παραπομπή Chicago StyleKhông rõ. Applied Statistics in Business and Economics. NOTNXB, 2009.
Παραπομπή MLAKhông rõ. Applied Statistics in Business and Economics. NOTNXB, 2009.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.