Hoel, P. (1977). Basic statistics for business & economics (2nd.). Wiley.
Citazione stile Chigago Style (17a edizione)Hoel, P. Basic Statistics for Business & Economics. 2nd. New York: Wiley, 1977.
Citatione MLA (9a ed.)Hoel, P. Basic Statistics for Business & Economics. 2nd. Wiley, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.