Koch, James H., author
McGraw-Hill, 1981
Buku Teks
Sippl, Charles J.
Prentice-Hall, 1981
Buku Teks
Ward, Ossian, author
Laurence King Publishing Ltd, 2014
Buku Teks
Ulene, Art
Mindanao way Health Points , 1998
Buku Teks
Hodnett, Edward
Harper & Brothers, 1955
Buku Teks