University of Queensland Press, 1972
Buku Teks
Asa S. Knowles, editor-in-chief.
McGraw-Hill, 1970
Buku Referensi
Thompson, James
Clive Bingley, 1987
Buku Teks
Thompson, James
Clive Bingley , 1987
Buku Teks
Simms, Lillian M.
Delmar Publisher , 1985
Buku Teks