Harrison, E. J. (1950). Junior judo. W. Foulsham.
Lua i Stíl Chicago (17ú heag.)Harrison, Ernest John. Junior Judo. London: W. Foulsham, 1950.
Lua MLA (9ú heag.)Harrison, Ernest John. Junior Judo. W. Foulsham, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.