Friederich, Carl J
The Age of power / Carl J. Friederich
Cornell University Press, 1957
 Buku Teks
Hofstadter, Richard
Academic freedom in the age of the college / by Richard Hofstadter
Columbia University Press , 1955
 Buku Teks
Byrne, J. Richard
Number systems an elementary approach/ J. Richard Byrne
McGraw-Hill , 1967
 Buku Teks
Schonberger, Richard John
Operations management productivity and quality / Richard J. Schonberger
Business Publications, 1985
 Buku Teks
Yang, Richard
The Chinese world / Richard Yang, Edward J. Lazzerini
The Forum Press, 1978
 Buku Teks