American Heart Association
Random House, 1996
Buku Teks
Warmbrand, Max, author
Whittier Books, 1956
Buku Teks
Seymour, Rogers James
Prentice-Hall, 1981
Buku Teks
Saheta, N.P.,
Bharata Medical Journal, 1969
Buku Teks
Caplan, Louis R.
Random House , 1993
Buku Teks