Singer, E. (1954). Personality in handwriting: The guiding image in graphology. Duckworth.
Chicago-stil citatSinger, Eric. Personality in Handwriting: The Guiding Image in Graphology. London: Duckworth, 1954.
MLA-referensSinger, Eric. Personality in Handwriting: The Guiding Image in Graphology. Duckworth, 1954.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.