Windholz, Martha, editor
The merck index: an encyclopedia of chemical drugs
Merck & Co., 1976
 Buku Referensi
Encyclopedia of drugs and alcohol : volume 2
Jaffe, Jerome H., editor in chief
MacMillan Library Reference USA, 1995
 Buku Referensi
Encyclopedia of drugs and alcohol : volume 1
Jaffe, Jerome H., editor in chief
MacMillan Library Reference USA, 1995
 Buku Referensi
Encyclopedia of drugs and alcohol : volume 3
Jaffe, Jerome H., editor in chief
MacMillan Library Reference USA, 1995
 Buku Referensi
The Encyclopedia Americana : volume 4
Americana Corporation, 1977
 Buku Referensi