References
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- Silverman , S. 1991 . Research on teaching in physical education: Review and commentary . Research Quarterly in Exercise and Sport , 62 ( 4 ) : 352 – 364 .
- Sorenson , B. L. 2001 . Money has not solved the problem: Personalizing policies to attain and retain substitute teachers . SubJournal , 2 ( 1 ) : 31 – 36 .
- Tippetts , Z. 2004 . Substitute teacher demographics, perceptions, and attitudes: A survey of substitute teachers in three districts . SubJournal , 5 ( 1 ) : 57 – 75 .