Cita APA (7th ed.)
Kohler, H. (1988). Statistics for business and economics (2nd ed.). Scott, Foresman.
Cita Chicago (17th ed.)
Kohler, Heinz. Statistics for Business and Economics. 2nd ed. Glenview, Ill.: Scott, Foresman, 1988.
Cita MLA (9th ed.)
Kohler, Heinz. Statistics for Business and Economics. 2nd ed. Scott, Foresman, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.