edited by Katie Scott and Deborah Cherry
Blackwell Publishing, 2005
Buku Teks SO
Kodansha International, 1964
Buku Referensi
Riley, Noel, editor
Free Press, 2003
Buku Referensi
by Korean Overseas Information Service
Korean Overseas Information Service, [Date of publication not identified]
Buku Teks SO
Sides, Dorothy Smith
Dover, 1961
Buku Teks SO