Singer, E. (1954). Personality in handwriting: The guiding image in graphology. Duckworth.
استشهاد بنمط شيكاغوSinger, Eric. Personality in Handwriting: The Guiding Image in Graphology. London: Duckworth, 1954.
MLA استشهادSinger, Eric. Personality in Handwriting: The Guiding Image in Graphology. Duckworth, 1954.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.