by United Nations Educational Scientific and Cultural Organization
UNESCO, 1953
Buku Teks
Hofstetter, Fred Thomas, 1949-
2003
Multimedia
Hofstetter, Fred Thomas, 1949-
McGraw-Hill, 1995
Multimedia
Potter, W. James
Sage, 2005
Buku Teks SO
Potter, W. James
Sage Publ., 2011
Buku Teks SO