Gaya APA

Picconi, M, J. et al (1993). Business statistics : elements and applications / Mario J. Picconi, Albert Romano, Charles L. Olson . New York: Harper Collins.

Gaya MLA

Picconi, Mario, J.. et al. "Business statistics : elements and applications / Mario J. Picconi, Albert Romano, Charles L. Olson". New York: Harper Collins, 1993. Textbook.