Meadows, A.J., author
Kogan Page, 1982
Buku Referensi
edited by Alton Bryant
Minnesota , Billy Graham Evangelistic Association
Buku Referensi
Bolander, Donald O., author
Lexicon Publication, 1993
Buku Referensi
Book Essentials, 1991
Buku Referensi
Grolier Incorporated, 1990
Buku Referensi