Immegart, G. L., & Pilecki, F. J. (1973). An introduction to systems for the educational administrator. Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Immegart, Glenn L., agus Francis J. Pilecki. An Introduction to Systems for the Educational Administrator. Reading, Mass: Addison-Wesley, 1973.
Lua MLA (9ú heag.)Immegart, Glenn L., agus Francis J. Pilecki. An Introduction to Systems for the Educational Administrator. Addison-Wesley, 1973.
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