The Horn book magazine
The Horn Book, Inc., 1997
Majalah, Jurnal, Buletin
Spencer, John H.
Ethiopia, the horn of Africa, and U.S. policy / John H. Spencer
IFPA, 1977
Buku Teks
Wiig, Edwin O.
Semimicro qualitative analysis : A course in applied chemical equilibrium / Edwin O. Wiig, Willard R. Line, John F. Flagg
D.Van Nostrand Company, 1954
Buku Teks
Dyson, John
The pond book / John Dyson
Kestrel Books, 1976
Buku Teks
Hansten, Philip D.
Drug interactions : clinical significance of drug-drug interactions / Philip D. Hansten, John R. Horn
Lea & Febiger, 1989
Buku Referensi