Health, Tom
John Wiley & Son, 1984
Buku Teks
Porter, Tom
E & FN Spon, 1997
Buku Teks
Dudley Herron J. .......(et al.)
D.C. Heath and Company, 2001
Buku Teks
by J. Dudley Herron [and others]
D.C. Heath, 1987
Buku Teks
Elsbree, Langdon
Health and Comp, 1967
Buku Teks