Encyclopedia of associations : volume II, geographic and executive index
editor, Frederick G. Ruffner, Robert C. Thomas, Ann Underwood, Harold C. Young
Gale Research, 1964
 Buku Referensi
Encyclopedia of associations : volume I, national organizations of the United States
editor, Frederick G. Ruffner, Robert C. Thomas, Ann Underwood, Harold C. Young
Gale Research, 1964
 Buku Referensi
Directory of European associations : part 2 = Repertoire des associations europeennes : partie 2 = Handbuch der europaischen Verbande : teil 2
editor, RW Adams
CBD Research, 1984
 Buku Referensi
The cambridge social history of britain 1750 -1950; Volume 2 : People and their environment
edited by F. M. L. Thomson
Cambridge University Press, 1990
 Buku Teks
Abdul Kholik, author
Dinamika Hubungan Muhammadiyah dengan NU Pasca Orde Baru (1998-2003)
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2004
 UI - Tesis (Membership)
Rice, Charles E.
Freedom of association / Charles E. Rice
New York University press, 1962
 Buku Teks