Grolier Incorporated, 1964
Buku Referensi
Mara, D. Duncan (David Duncan), 1944-, author
John Wliley & Sons , 1983
Buku Teks
edited by Richard Feachem, Michael McGarry, Duncan Mara
John Wiley & Sons, 1980
Buku Teks
Dennett, Tyler
Barnes ,
Buku Teks
Bretschneider, E., 1833-1901, author
Kegan Paul, 1888
Buku Teks