Day, R.A., author
[publisher not identified], [date of publication not identified]
Buku Teks
Day, R.A., author
Erlangga , 1999
Buku Teks
Day, R.A., author
Erlangga, 1981
Buku Teks
Day, R.A., author
Airlangga University Press, 1994
Buku Teks
Day, R.A., author
Erlangga, 1980
Buku Teks