Daniel, W. W. (1986). Bussines statistics: Basic concepts and methodology (4ª ed.). Houghton Mifflin.
Cita Chicago (17th ed.)Daniel, Wayne W. Bussines Statistics: Basic Concepts and Methodology. 4ª ed. Houghton Mifflin, 1986.
Cita MLA (9th ed.)Daniel, Wayne W. Bussines Statistics: Basic Concepts and Methodology. 4ª ed. Houghton Mifflin, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.