8th EditionSheldon Ross927 explanations
10th EditionAllen R. Angel, Christine D. Abbott, Dennis C. Runde6,365 explanations
5th EditionDaniel S. Yates, Daren S. Starnes, David Moore2,433 explanations
7th EditionDennis Wackerly, Richard L. Scheaffer, William Mendenhall3,341 explanations