League, Richard, author
Mouton, 1977
Buku Teks
Walters, Joel, author
Lawrence Erlbaum Associates, 2005
Buku Teks
Osgood, Berrien Cornelius
The Ronald Pres Company, 1951
Buku Teks
edited by Marianne Hundt, Sandra Mollin, Simone E. Pfenninger
Cambridge University Press, 2017
Buku Teks
Osgood, Carl C.
Pergamon Press, 1982
Buku Teks