Thompson, A., author
Pustaka Ilmu, 1965
Buku Teks
Salle, A.J., author
McGraw-Hill, 1973
Buku Teks
Muir, Robert, author
Henry Frowde, Hodder & Stoughton, 1921
Buku Teks
Long, Robert W., author
W.B. Saunders, 1976
Buku Teks
by John G. Holt [and others]
Williams & Wilkins, 1993
Buku Teks