Austin, James E.
Gunn & Hani Publishers, Inc., 1981
Buku Teks
Austin, James E.
The John Hopkins University Press , 1980
Buku Teks
Austin, James C.
Twayne , [1964]
Buku Teks
Bullis, L. Harold
Westview Press, 1985
Buku Teks
Bullis, L. Harold
Westview Press, 1985
Buku Teks