Clements, B., and Ligon, G. (2001). Designing and Implementing a System for Assigning Student Identifiers in New York. Austin, TX: Evaluation Software Publishing, Inc.
Ligon, G. (1997). Designing and Implementing a System for Assigning Student Identifiers. Austin, TX: Evaluation Software Publishing, Inc.
National Forum on Education Statistics. (1994). Education Data Confidentiality: Two Studies. Issues in Education Data Confidentiality and Access, and Compilation of Statutes, Laws, and Regulations Related to the Confidentiality of Education Data (NCES 94–635). Washington, DC: U.S. Government Printing Office.