Bradley, P. D. (1956). Involuntary participation in unionism. American Enterprise Association.
Čikaški stil citiranja (17. izdanje)Bradley, Philip D. Involuntary Participation in Unionism. Washington: American Enterprise Association, 1956.
MLA način citiranja (8. izdanje)Bradley, Philip D. Involuntary Participation in Unionism. American Enterprise Association, 1956.
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