Watt, William Montgomery
Islamic political thought the basic concepts
Edinburg University Press, 1980
 Buku Teks SO
Peterson, John M.
Basic concepts of elementary mathematics
Prindle, Weber & Schmidt, 1971
 Buku Teks SO
Lindsay, Robert Bruce
Basic concepts of physics
Van Nostrand Reinhold, 1971
 Buku Teks SO
Malone, Leo J.
Basic concepts of chemistry
John Wiley & Sons, 1981
 Buku Teks SO
Sherman, Alan
Basic concepts of chemistry
Houghton Mifflin, 1992
 Buku Teks SO