APA (7th ed.) Citation

Porwoll, P. J. (1977). Practices and procedures in the use of substitute teachers: [study. Educational Research Service.

Chicago Style (17th ed.) Citation

Porwoll, Paul J. Practices and Procedures in the Use of Substitute Teachers: [study. Arlington, Va.: Educational Research Service, 1977.

MLA (9th ed.) Citation

Porwoll, Paul J. Practices and Procedures in the Use of Substitute Teachers: [study. Educational Research Service, 1977.