APA (7th ed.) Citation

Nigl, A. J. (1981). The development of children's understanding of space relations among objects: The coordination of perspectives task of Jean Piaget. Lang.

Chicago Style (17th ed.) Citation

Nigl, Alfred J. The Development of Children's Understanding of Space Relations Among Objects: The Coordination of Perspectives Task of Jean Piaget. Bern [u.a.]: Lang, 1981.

MLA (9th ed.) Citation

Nigl, Alfred J. The Development of Children's Understanding of Space Relations Among Objects: The Coordination of Perspectives Task of Jean Piaget. Lang, 1981.