Παραπομπή APA

McElroy, F. E. (1981). Administration and programs (8th ed.). [Chicago, IL.]: National Safety Council.

Παραπομπή Chicago Style

McElroy, Frank E. Administration and Programs. 8th ed. [Chicago, IL.]: National Safety Council, 1981.

Παραπομπή MLA

McElroy, Frank E. Administration and Programs. 8th ed. [Chicago, IL.]: National Safety Council, 1981.

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