Schiebel, W. J. E. (1956). Labor-management relations in the secondary schools curriculum. Texas Study of Secondary Education.
Lua i Stíl Chicago (17ú heag.)Schiebel, Walter J. E. Labor-management Relations in the Secondary Schools Curriculum. Austin: Texas Study of Secondary Education, 1956.
Lua MLA (8ú heag.)Schiebel, Walter J. E. Labor-management Relations in the Secondary Schools Curriculum. Texas Study of Secondary Education, 1956.
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