Flanagan, Robert J.
Labor economic and labor relations / Robert J. Flanagan, Robert S. Smith, and Ronald G. Ehrenberg
Scott, Foresman, 1984
 Buku Teks
Allen, Robert E.
Contemporary labor relations / Robert E. Allen and Timoty J. Keaveny
Mass Addison-Wesley , 1983
 Buku Teks
Godine, Morton Robert
The labor problem in the public service : a study in political pluralism / Morton Robert Godine
Harvard University Press, 1951
 Buku Teks
Pembuktian teorema brooks
Universitas Indonesia, 2000
 UI - Skripsi Membership
Mann, Thomas
Budden brooks: the decline of a family
Everyman`s Library, 2001
 Buku Referensi