Abdulla Ali Alsaboosi
Global Hapkido Association Color Belt Manual- Global Hapkido Association Color Belt Manual (2nd Gup)
- Global Hapkido Association Color Belt Manual (3rd Gup)
- Global Hapkido Association Color Belt Manual (4th Gup)
- Global Hapkido Association Color Belt Manual (6th Gup)
- Global Hapkido Association Color Belt Manual (8th Gup)
- Global Hapkido Association Color Belt Manual (Volume 1)
- Global Hapkido Association Color Belt Manual (Volume 2)