Whitehead, P., & Whitehead, G. (1992). Statistics for business an introduction (2nd ed.). Pitman.
Citazione stile Chigago Style (17a edizione)Whitehead, Paul, e Geoffrey Whitehead. Statistics for Business an Introduction. 2nd ed. London: Pitman, 1992.
Citatione MLA (9a ed.)Whitehead, Paul, e Geoffrey Whitehead. Statistics for Business an Introduction. 2nd ed. Pitman, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.