Perspectives on the Reagan years
edited by John L. Palmer
Urban Institute Press, 1986
 Buku Teks
Mervin, David
Ronald Reagan and the American presidency
Longman, 1990
 Buku Teks
Wilkes, Angela
German for beginners
Chicago: A Division of NTC Pub., 1987,
 Buku Referensi
Blackstone, Judith
Zen for beginners
Writers and Readers, 1986
 Buku Teks
Hill, G.A.
A geometry for beginners
Ginn, 1889
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