Hartley, H. J. (1968). Educational planning-programming-budgeting: A systems approach. Prentice-Hall, Inc.
Chicago-viite (17. p.)Hartley, Harry J. Educational Planning-programming-budgeting: A Systems Approach. Englewood Cliffs, N.J: Prentice-Hall, Inc, 1968.
MLA-viite (9. p.)Hartley, Harry J. Educational Planning-programming-budgeting: A Systems Approach. Prentice-Hall, Inc, 1968.
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