Ladd, E. C., & Lipset, S. M. (1973). Professors, unions, and American higher education. Carnegie Commission on Higher Education.
Citace podle Chicago (17th ed.)Ladd, Everett Carll, a Seymour Martin Lipset. Professors, Unions, and American Higher Education. [Berkeley, Calif.]: Carnegie Commission on Higher Education, 1973.
Citace podle MLA (8th ed.)Ladd, Everett Carll, a Seymour Martin Lipset. Professors, Unions, and American Higher Education. Carnegie Commission on Higher Education, 1973.
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