Steiner, George Albert, 1912-
Macmillan, 1969
Buku Teks SO
Davis, Ralph Currier
Harper & Brothers, 1951
Buku Teks
edited by John W. Humble
McGraw-Hill, 1970
Buku Teks SO
edited by C. Edward Weber and Gerald Peters
International Textbook Company, 1969
Buku Teks SO
[compiled by] Patrick E. Connor, with the collaboration of Theo Haimann, William G. Scott
Houghton-Mifflin, 1978
Buku Teks