Horn, E., & Ashbaugh, E. J. (1926). Lippincott's new Horn-Ashbaugh speller: Incorporating the findings of a tabular analysis of 5,100,000 words of ordinary writing (I-VIII edition.). J.B. Lippincott Company.
Lua i Stíl Chicago (17ú heag.)Horn, Ernest, agus Ernest J. Ashbaugh. Lippincott's New Horn-Ashbaugh Speller: Incorporating the Findings of a Tabular Analysis of 5,100,000 Words of Ordinary Writing. I-VIII edition. Philadelphia ; London ; Chicago: J.B. Lippincott Company, 1926.
Lua MLA (8ú heag.)Horn, Ernest, agus Ernest J. Ashbaugh. Lippincott's New Horn-Ashbaugh Speller: Incorporating the Findings of a Tabular Analysis of 5,100,000 Words of Ordinary Writing. I-VIII edition. J.B. Lippincott Company, 1926.
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