SoRelle, R. P. (1927). Teacher's manual: Rational typewriting projects. Gregg Publishing Co..
Lua i Stíl Chicago (17ú heag.)SoRelle, Rupert Pitt. Teacher's Manual: Rational Typewriting Projects. New York : Chicago [etc.]: Gregg Publishing Co., 1927.
Lua MLA (8ú heag.)SoRelle, Rupert Pitt. Teacher's Manual: Rational Typewriting Projects. Gregg Publishing Co., 1927.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.