Northrup, H. R., & Bloom, G. F. (1971). Government and labor: The role of government in union management relations. R.D. Irwin Ann Arbor : University Microfilms.

Northrup, Herbert R., and Gordon F. Bloom. Government and Labor: The Role of Government in Union Management Relations. Homewood, Ill.: R.D. Irwin Ann Arbor : University Microfilms, 1971.

Northrup, Herbert R., and Gordon F. Bloom. Government and Labor: The Role of Government in Union Management Relations. R.D. Irwin Ann Arbor : University Microfilms, 1971.