APA (7th ed.) Citation

Horn, E., & Ashbaugh, E. J. (2010). Lippincott's Horn-Ashbaugh Speller For Grades One to Eight. Project Gutenberg.

Chicago Style (17th ed.) Citation

Horn, Ernest, and Ernest J. Ashbaugh. Lippincott's Horn-Ashbaugh Speller For Grades One to Eight. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Horn, Ernest, and Ernest J. Ashbaugh. Lippincott's Horn-Ashbaugh Speller For Grades One to Eight. Project Gutenberg, 2010.

Warning: These citations may not always be 100% accurate.