Mervin, David
Ronald Reagan and the American presidency
Longman, 1990
 Buku Teks SO
Perspectives on the Reagan years
edited by John L. Palmer
Urban Institute Press, 1986
 Buku Teks SO
Ewing, J.H.
Logic for beginners
Student Outline Co. , 1960
 Buku Teks
Wilkes, Angela
German for beginners
Passport Books, [Date of publication not identified]
 Buku Teks SO
Wilkes, Angela
French for beginners
Passport Books, 1987
 Buku Teks SO