Krom, N.J., author
Gian Publishing House, 1927
Buku Teks
Krom, N.J., author
Gian Publishing House, 1986
Buku Teks
Hastings, James, author
T&T Clark, 1980
Buku Referensi
edited by Paul Hockings
G.K. Hall, 1993
Buku Referensi
Field Enterprises Educational Corporation, 1963
Buku Referensi