Hwok-Aun Lee
Nakanishi Printing Company, 2022
Artikel Jurnal
Hazeu, H.A.G.
N.V. Philips Gloeilampenfabrieken, 1971
Buku Teks
Scott-James, R.A.
Longman, 1951
Buku Teks
Ford foundation , 2003
Buku Referensi
edited by Philip Mathews
Didier Millet, 2007
Buku Referensi