Twomey, D. P. (1989). Labor & Employment Law, Text & Cases David P. Twomey. South-Western.
Chicago-referens (17:e uppl.)Twomey, David P. Labor & Employment Law, Text & Cases David P. Twomey. South-Western, 1989.
MLA-referens (8:e uppl.)Twomey, David P. Labor & Employment Law, Text & Cases David P. Twomey. South-Western, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.