Halm, George N., author
University of North-Carolina Press, 1945
Buku Teks
Tew, Brian
Hutchinson, 1970
Buku Teks
Horie, Shigeo, author
St. Mariua Press, 1964
Buku Teks
Aufricht, Hans, author
Frederick A. Praeger, 1964
Buku Teks
Coffey, Peter, author
Macmillan, 1974
Buku Teks