ebrary, Inc, Strawser, C. J., & Ryan, M. M. (2010). Business statistics of the United States: Patterns of economic change (15th ed.). Bernan Press.
Chicago Style (17th ed.) Zitazioaebrary, Inc, Cornelia J. Strawser, eta Mary Meghan Ryan. Business Statistics of the United States: Patterns of Economic Change. 15th ed. Lanham, MD: Bernan Press, 2010.
MLA (9th ed.) Zitazioaebrary, Inc, et al. Business Statistics of the United States: Patterns of Economic Change. 15th ed. Bernan Press, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.