McNaughton, William, author
Charles E. Tuttle, 1994
Buku Teks
Charles E. Tutle Co.Inc, 1959,
Buku Referensi
Fairbairn, Gavin, author
McGraw-Hill, 2012
Buku Teks
John Hartley [and others]
Rinehart and Winston, 1962
Buku Teks
Grant, Bruce, 1925-, author
Hollym, 1982
Buku Teks