http://www.aikikai.or.jp/eng/AIKIKAI FOUNDATION (公益財団法人合気会) http://www.aikikai.or.jp/eng/information/index.htmlHOMBU DOJO (本部道場) https://www.facebook.com/AikikaiFoundation/FACEBOOK - HOMBU DOJO (本部道場) www.aikido-international.orgINTERNATIONAL AIKIDO FEDERATION (IAF) https://en.wikipedia.org/wiki/AikidoWIKIPEDIA - AIKIDO https://aikidojournal.com/AIKIDO JOURNAL https://www.hk.emb-japan.go.jp/CONSULATE-GENERAL OF JAPAN IN HONG KONG
