Coba jelasin Lihat juga dari Siulan dalam bahasa melayu dong

Stekelenburg, A.V. van. "Whistling in Antiquity", Akroterion, vol. 45, pp. 65–74 (2000).

Kahn, Ric. "Finally, whistling is cool again", Boston Globe (27 Ogos 2007)

"History of Musical Whistling" given by Linda Parker Hamilton at the 2012 International Whistlers Convention (YouTube)