Olivier, P.  (1974).  An evaluation of the self-scoring flexilevel testing model. Florida State University.

Olivier, P.  (1974).  An evaluation of the self-scoring flexilevel testing model. Unpublished dissertation, Florida State University. Dissertation Abstracts International, 35 (7-A), 4257.

Olivier, P.  (1973).  An overview of tailored testing (unpublished manuscript). Florida State University, Program of Educational Evaluation and Research Design.