Horn, E., & Ashbaugh, E. J. (1928). The Horn-Ashbaugh high school speller: Incorporating the findings of a tabular analysis of 5,100,000 words of ordinary writing and of over 1,000,000 running words of letters written by high school students. J.B. Lippincott Co.
Lua i Stíl Chicago (17ú heag.)Horn, Ernest, agus Ernest J. Ashbaugh. The Horn-Ashbaugh High School Speller: Incorporating the Findings of a Tabular Analysis of 5,100,000 Words of Ordinary Writing and of over 1,000,000 Running Words of Letters Written by High School Students. Philadelphia [etc.]: J.B. Lippincott Co, 1928.
Lua MLA (8ú heag.)Horn, Ernest, agus Ernest J. Ashbaugh. The Horn-Ashbaugh High School Speller: Incorporating the Findings of a Tabular Analysis of 5,100,000 Words of Ordinary Writing and of over 1,000,000 Running Words of Letters Written by High School Students. J.B. Lippincott Co, 1928.