Greenkeeperverband Deutschland: http://www.greenkeeperverband.de/
Swiss Greenkeeper Association: http://www.greenkeeper.ch/
Slovenia Greenkeepers Association: http://www.zvgis.si/
British and International Golf Greenkeepers Association: http://www.bigga.org.uk/
Golf Course Superintendents Association of America (GCSAA): http://www.gcsaa.org/
Scandinavian Environmental Turf Research Foundation: www.sterf.org
Sports Turf Research Institute: www.stri.co.uk
Golf Environment Organisation (GEO): http://www.golfenvironment.org
Golf
Österreichischer Golfverband: www.golf.at
PGA of Austria: https://www.pgaofaustria.at/
European Golf Association (EGA): http://www.ega-golf.ch/
R & A: http://www.randa.org
Institute of European Golf Course Architects: www.eigca.org
European Tour: https://www.europeantour.com/
PGA Tour: https://www.pgatour.com/
