Harkins, William E., author
Littlefield, Adams, 1959
Buku Referensi
Hisamatsu, Senichi, author
Kodansha International, 1978
Buku Referensi
Hisamatsu, Senichi, author
Kodansha International, 1976
Buku Referensi
edited by Robert Richards
Littlefield, Adams, 1955
Buku Referensi
Turville-Petre, Thorlac, author
Blackwell Publishing, 2007
Buku Teks