Cita APA (7th ed.)
Johnson, R. A., Richard A. Johnson, & Gouri K. Bhattacharyya. (2001). Statistics: Principles and methods (4th ed.). John Wiley &Sons.
Cita Chicago (17th ed.)
Johnson, Richard A., Richard A. Johnson, i Gouri K. Bhattacharyya. Statistics: Principles and Methods. 4th ed. New York: John Wiley &Sons, 2001.
Cita MLA (9th ed.)
Johnson, Richard A., et al. Statistics: Principles and Methods. 4th ed. John Wiley &Sons, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.