Dilla Christina, author
Universitas Indonesia, 2011
Artikel Jurnal
Yulianan Rini Dwi Yuliandari, author
Universitas Indonesia, 2012
UI - Tesis (Open)
edited by John A. Doeney ... [and others]
Butterworth-Heinemann, 1994
Buku Teks
Wallwork, S.C.
"London: Longmans, 1960",
Buku Teks
Golden, Sidney
"Massachusetts: Addison-Wesley, 1961",
Buku Teks