APA (7th ed.) Citation
Smith, R. W. (1966). Dictionary of english word roots: English-roots and Roots-english with examples and excercises (ed.). Littlefield, Adams and Co.
Chicago Style (17th ed.) Citation
Smith, Robert W. Dictionary of English Word Roots: English-roots and Roots-english with Examples and Excercises. ed. New Jersey: Littlefield, Adams and Co, 1966.
MLA (9th ed.) Citation
Smith, Robert W. Dictionary of English Word Roots: English-roots and Roots-english with Examples and Excercises. ed. Littlefield, Adams and Co, 1966.
Warning: These citations may not always be 100% accurate.