Oxford University Press, 1991
Buku Referensi
The Commercial Press, 2001
Buku Referensi
David B. Guralnik, editor in chief
William Collins Publishers, 1976
Buku Referensi
Yeo, Keu-nyi, author
Seoul Doosan Dong, 2010
Buku Referensi
edited by Peter Newman, Murray Milgate and John Eatwell
Macmillan, 1992
Buku Referensi