HARPER, W., & HARPER, W. (1976). Statistics W.m. Harper. Macdonald and Evans.
Lua i Stíl Chicago (17ú heag.)HARPER, W.M, agus W.M HARPER. Statistics W.m. Harper. Macdonald and Evans, 1976.
Lua MLA (8ú heag.)HARPER, W.M, agus W.M HARPER. Statistics W.m. Harper. Macdonald and Evans, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.