Fels, Rendings
The University of North Carolina Press, 1959
Buku Teks
Schneider, Eugene V., author
Aksara Persada, 1986
Buku Teks
Schneider, Eugene V., author
Aksara Persada, 1986
Buku Teks
Ramo, Simon
Hill and Wang, 1988
Buku Teks
Reese, Charles D., author
CRC Press, 2009
Buku Referensi