Manning, G. (1988). Morale: Quality of work life. South-Western Pub.Co.
Lua i Stíl Chicago (17ú heag.)Manning, George. Morale: Quality of Work Life. Cincinnati, Ohio: South-Western Pub.Co, 1988.
Lua MLA (9ú heag.)Manning, George. Morale: Quality of Work Life. South-Western Pub.Co, 1988.
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