Most of the world : the peoples of Africa, Latin America, and the East today / Edited by Ralph Linton
Columbia University Press, 1949
Buku Teks SO
Stone, Linton
Cambridge proficiency English / Linton Stone
Macmillan, 1967
Buku Teks SO
Linton, Harold
Portfolio design/Harold Linton, foreword by Cesar Pelli
W.W. Norton Company, 2000
Buku Teks SO
Agnew, Ralph Palmer
Differential equations/ Ralph Palmer
McGraw-Hill Book, 1960
Buku Teks SO
Ellison, Ralp
Invisible man / Ralph Ellison
Penguin Books, 1970
Buku Teks SO