Lowfnberg, Edwin C
Schaum'soutline series theory and problems of electronic circuit/edwin C. lowfnberg
McGraw-Hill Company, 1967
 Buku Teks
Hoyt, Robert S.
Europe in the middle ages / Robert S. Hoyt
Harcourt, Brace & World, 1957
 Buku Teks
Hoyt, Joseph Bixby
Man and the earth / Joseph Bxby Hoyt
Prentice-Hall, 1973
 Buku Teks
Roberts, Kate Louise, compiler
Hoyt's new cyclopedia of practical quotations
Grosset and Dunlap , 1940
 Buku Referensi
Sujadi
The policies of young muslim association in europe for its Indonesian muslims in dutch society: A re-examination
UIN Sunan Kalijaga, 2006
 Artikel Jurnal