Kaufman, R. A. (1972). Educational system planning. Prentice-Hall.
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Dyfyniad Arddull Chicago
Kaufman, Roger A. Educational System Planning. Englewood Cliffs: Prentice-Hall, 1972.
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Dyfyniad MLA
Kaufman, Roger A. Educational System Planning. Prentice-Hall, 1972.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.