Brase, C. H. (2008). Understandable statistics: Concepts and methods/8th ed. Houghton Mifflin Company.
Dyfyniad Arddull ChicagoBrase, Charles Henry. Understandable Statistics: Concepts and Methods/8th Ed. New York: Houghton Mifflin Company, 2008.
Dyfyniad MLABrase, Charles Henry. Understandable Statistics: Concepts and Methods/8th Ed. Houghton Mifflin Company, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.