M. Karjadi, author
Politeia, 1958
Buku Teks
edited by Lee Bosher
Taylor & Francis Group, 2008
Buku Teks
Hole, Graham, author
Lawrence Erlbaum, 2007
Buku Teks
Hall, Robert W., author
Dow Jone-Irwin , 1987
Buku Teks
Tysor, H. James
Dallas: Banks Upshaw, 1953
Buku Teks