edited by C. Steven LaRue
Fitzroy Dearborn Publishers, 1997
Buku Referensi
Spear, Percival
The University of Michigan Press, 1961
Buku Teks
Hobbs, Lisa
McGraw-Hill, 1967
Buku Teks
London Murray 1949
Buku Teks
Zimmer, Heinrich
Meridian Books, 1956
Buku Teks