Lindgren, B. W., Berry, D., & McElrath, G. W. (1978). Introduction to probability and statistics (4th.). MacMillan.

Lindgren, B. W., D.A Berry, and G. W. McElrath. Introduction to Probability and Statistics. 4th. New York: MacMillan, 1978.

Lindgren, B. W., et al. Introduction to Probability and Statistics. 4th. MacMillan, 1978.