edited by Clayton L. Thomas
PG Publishing, 1990
Buku Referensi
edited by Clayton L. Thomas
F.A. Davis , 1997
Buku Referensi
edited by Clayton L. Thomas
P.G. Publishing, 1984
Buku Referensi
Mosby, 2002
Buku Referensi
Malalasekera, G. P., author
Luzac , 1960
Buku Referensi