Used sources:
SALSA:
www.geocities.com/sd_au/mambo/sdhmambo.htm
www.salsacrazy.com
www.centralhome.com/ballroomcountry/salsa.htm
www.salsafievre.com
www.geocities.com/juanpacar_2000/history1.htm
www.si.umich.edu/chico/mhn/salsa/

MERENGUE:
www.mindspring.com/~adiascar/musica/merhst-e.htm
allmusic.com
www.centralhome.com/ballroomcountry/merengue.htm

CASINO RUEDA:
www.thelatinworld.myweb.nl/rueda.html
www.canavese.it/sirio/english/rueda.html
www.latin-heat.com/latinheat_casino.htm
www.miamisalsa.com/historyMenu.html

www.chez.com/abri/a/lexb.htm
aachen.heimat.de/salsa/glossary.htm