Twomey, D. P. (1989). Labor & Employment Law, Text & Cases David P. Twomey. South-Western.
Chicago Style (17. basım) AtıfTwomey, David P. Labor & Employment Law, Text & Cases David P. Twomey. South-Western, 1989.
MLA (8th ed.) AtıfTwomey, David P. Labor & Employment Law, Text & Cases David P. Twomey. South-Western, 1989.
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