APA (7th ed.) Citation
Horn, E., & Ashbaugh, E. J. (1920). Lippincott's Horn-Ashbaugh Speller: For grades 1 to 8. Lippincott.
Chicago Style (17th ed.) Citation
Horn, Ernest, and Ernest James Ashbaugh. Lippincott's Horn-Ashbaugh Speller: For Grades 1 to 8. Philadelphia: Lippincott, 1920.
MLA (9th ed.) Citation
Horn, Ernest, and Ernest James Ashbaugh. Lippincott's Horn-Ashbaugh Speller: For Grades 1 to 8. Lippincott, 1920.
Warning: These citations may not always be 100% accurate.