Cita APA (7th ed.)
Johnson, R. R., & Siskin, B. R. (1980). Elementary statistics for business. Duxbury Press.
Cita Chicago (17th ed.)
Johnson, Robert Russell, i Bernard R. Siskin. Elementary Statistics for Business. North Scituate, Mass.: Duxbury Press, 1980.
Cita MLA (9th ed.)
Johnson, Robert Russell, i Bernard R. Siskin. Elementary Statistics for Business. Duxbury Press, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.