Trimmer, Joseph F., author
Houghton Miffiln, 1983
Koleksi Publik
Trimmer, Joseph F., author
Houghton Miffiln, 1981
Buku Teks
R. R. Bowker, 1992
Buku Referensi
Srivastava, R.S.L., author
Tata McGraw-Hill, 1980
Buku Teks
Cohn, P.M., author
John Wiley & Sons, 1979
Buku Teks