Lua APA (7ú heag.)

GIEGOLD, W. C. (1978). Management by objectives. McGraw Hill.

Lua i Stíl Chicago (17ú heag.)

GIEGOLD, William C. Management by Objectives. New York: McGraw Hill, 1978.

Lua MLA (9ú heag.)

GIEGOLD, William C. Management by Objectives. McGraw Hill, 1978.

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