Guttenberg, Albert Z., author
University of Illinois Press, 1993
Buku Teks
Carroll, John B., author
Prentice-Hall, 1964
Buku Teks
Crawford, William R., author
Frederick A. Praeger, 1961
Buku Teks
Hayakawa, S.I., editor
London George & Unwin 1959
Buku Teks
Heidegger, Martin, author
Harper & Row, 2001
Buku Teks