University of California Press, 1945.
Buku Teks
Pei, Mario A., author
Harper, 1957
Buku Teks
EPB Publ., 1980
Buku Teks
Hunter, Lynne, author
Prentice Hall Regents, 1989
Buku Teks
Mahathera, A. P. Buddhadatta
P. M. W. Piyaratna, [date of publication not identified]
Buku Teks