Brueckner, L. J., & King, M. W. (1928). Language drills. Mentzer, Bush & Co..
Lua i Stíl Chicago (17ú heag.)Brueckner, Leo J., agus Morrill Whitney King. Language Drills. New York ; Chicago: Mentzer, Bush & Co., 1928.
Lua MLA (8ú heag.)Brueckner, Leo J., agus Morrill Whitney King. Language Drills. Mentzer, Bush & Co., 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.