Gaya APA

Oppitz, J, W, C. ( New York)). The moral obligation to join labor unions. Disertasi Angelicum. . Neo-Eboraci: 1961 (pcby: The Paulist Press.

Gaya MLA

Oppitz, Joseph, W.,, C.ss.R.. "The moral obligation to join labor unions. Disertasi Angelicum. ". Neo-Eboraci: 1961 (pcby: The Paulist Press, New York). Buku.