Παραπομπή APA

Lovell, K. (1965). Growth of basic mathematical and scientific concepts in children.

Παραπομπή Chicago Style

Lovell, K. Growth of Basic Mathematical and Scientific Concepts in Children. University of London Press Ltd., London, 1965.

Παραπομπή MLA

Lovell, K. Growth of Basic Mathematical and Scientific Concepts in Children. 1965.