Lua APA (7ú heag.)

Não informado. (1970). Planning & Changing. Illinois State University, Department of Educational Administration.

Lua i Stíl Chicago (17ú heag.)

Não informado. Planning & Changing. Normal, Ill: Illinois State University, Department of Educational Administration, 1970.

Lua MLA (8ú heag.)

Não informado. Planning & Changing. Illinois State University, Department of Educational Administration, 1970.

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