References
- Daniel, W. W. (1990), Applied Nonparametric Statistics (2nd ed.), Boston: PWS-KENT Publishing Company.
- MathSoft (1997), S-PLUS 4 Guide to Statistics, Data Analysis Products Division, Seattle: Author.
- Steele, S. ( December 21, 1997), “Babies by the Dozen for Christmas: 24-Hour Baby Boom,” The Sunday Mail (Brisbane), p. 7.