Ginn and Company & Johnson, K. (1979). Ginn language program. Ginn.
Lua i Stíl Chicago (17ú heag.)Ginn and Company agus Ken Johnson. Ginn Language Program. Lexington, Mass.: Ginn, 1979.
Lua MLA (8ú heag.)Ginn and Company agus Ken Johnson. Ginn Language Program. Ginn, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.