Newman, Daniel, author
Routledge, 2007
Buku Referensi
Lane, Edward William, author
Frederick Ungar Publishing, 1956
Buku Referensi
Steingass, F., author
Gaurav Publishing House, 1986
Buku Referensi
Steingass, F., author
Antarkarya, 1986
Buku Referensi
Hava, J.G., author
Catholic Press , 1951
Buku Referensi