"Surabaya of Indonesia". Foreign Affairs Office of Xiamen Municipal People's Government. Diarsipkan dari versi asli tanggal 2012-01-12. Diakses tanggal 2011-11-30.
"Surabaya of Indonesia". Foreign Affairs Office of Xiamen Municipal People's Government. Diarsipkan dari versi asli tanggal 2012-01-12. Diakses tanggal 2011-11-30.