Hsieh, Alice Langley
Prentice-Hall, 1962
Buku Teks SO
edited by P. Edward Haley, David M. Keithly, and Jack Merritt
Westview Press, 1985
Buku Teks
edited by R. James Woolsey
ICS Press, 1984
Buku Teks
by Gerhart Friedlander [and others]
John Wiley & Sons, 1981
Buku Teks SO
Green, Alex Edward Samuel, 1919-
McGraw-Hill, 1955
Buku Teks SO