Gw mau tau Lihat juga dari Belon. Jelasin dalam bahasa melayu

Senarai barang dikilang boleh kembung

"Stories Behind Everyday Things"; New York: Reader's Digest, 1980.

Stratospheric balloons, history and present Historical recompilation project on the use of stratospheric balloons in the scientific research, the military field and the aerospace activity

National trade association for the UK balloon industry

Balloon and Party Industry alliance for the UK and European Balloon and Party industry

National trade association for the Australasian balloon industry