APA-referens (7:e uppl.)
Smith, R. W. (1966). Dictionary of english word roots: English-roots and Roots-english with examples and excercises (ed.). Littlefield, Adams and Co.
Chicago-referens (17:e uppl.)
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-referens (9:e uppl.)
Smith, Robert W. Dictionary of English Word Roots: English-roots and Roots-english with Examples and Excercises. ed. Littlefield, Adams and Co, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.