Steingass, F., author
Antarkarya, 1986
Buku Referensi
Steingass, F., author
Gaurav Publishing House, 1986
Buku Referensi
Hava, J.G., author
Catholic Press , 1951
Buku Referensi
Wortabet, John, author
Frederick Ungar Publishing, 1954
Buku Referensi
Elias, Elias A., author
Elias Modern Press, 1972
Buku Referensi