Crouch, Harold, author
Equinox, 2007
Buku Teks
Isaacs, Harold R., author
Macmillan Company , 1947
Buku Teks
Harper, Harold A.
Lange Medical Publications, 1969
Buku Teks
Harper, Harold A.
Lange Medical Publications, 1975
Buku Teks
Robbins, Harold, 1916-1997
New English Library, 1973
Buku Teks