Akademika Pressindo, 1985
Buku Teks
Pollard, A.H., author
Bina Aksara, 1982
Buku Teks
Pollard, A.H., author
Bina Aksara, 1984
Buku Teks
Heer, David M., author
Prentice-Hall, 1975
Buku Teks
edited by Philip M. Hauser and Otis Dudley Duncan
The University of Chicago Press, 1959
Buku Teks