edited by Brigadier Peter Young
Hamlyn, 1981
Buku Referensi
Young, Peter
Bison Books, 1985
Buku Referensi
Reynolds, E. Bruce
Cambridge University Press, 2005
Buku Teks SO
Fujiware, Twaichi
Pustaka Sinar Harapan, 1988
Buku Teks
edited by Debbie Lewer
Blackwell, 2005
Buku Teks