Eng, H. (1970). The psychology of children's drawings: From the first stroke to the coloured drawing. With many illustr (2.ed.,repr.). Routledge & Kegan Paul.
Chicago-Zitierstil (17. Ausg.)Eng, Helga. The Psychology of Children's Drawings: From the First Stroke to the Coloured Drawing. With Many Illustr. 2.ed.,repr. London: Routledge & Kegan Paul, 1970.
MLA-Zitierstil (9. Ausg.)Eng, Helga. The Psychology of Children's Drawings: From the First Stroke to the Coloured Drawing. With Many Illustr. 2.ed.,repr. Routledge & Kegan Paul, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.