editor, Tom Jacobs
Kanisius, 1988
Buku Teks
Jacobs, Tom, editor
Kanisius , 1992
Buku Teks
Higham, N. J., author
Routledge, 2006
Buku Teks
Olmstead, Clifton E., author
Prentice-Hall, 1960
Buku Teks
Ronald Creighton-Jobe, consultant
Hermes House, 2017
Buku Referensi