editors, Raymond Daley and Henry Miller
Livingstone, 1971
Buku Teks
McHardy, K.C.; Duguid, K.P.; Jamieson, M.J.; Petrie, J. C.; Towler, H.M.A.
Churchill Livingstone , 1997
Buku Referensi
Murray Longmore [and others]
Oxford University press, 2014
Buku Teks
Rubenstein, David, author
Original Publishing., 1976
Buku Teks
McPhee, Stephen J., author
McGraw-Hill, 2010
Buku Teks