APA (7e ed.) Bronvermelding

Lovell, K. (1966). The growth of basic mathematical and scientific concepts in children (5th ed.). Hodder and Stoughton.

Chicago (17e ed.) Bronvermelding

Lovell, K. The Growth of Basic Mathematical and Scientific Concepts in Children. 5th ed. London: Hodder and Stoughton, 1966.

MLA (9e ed.) Bronvermelding

Lovell, K. The Growth of Basic Mathematical and Scientific Concepts in Children. 5th ed. Hodder and Stoughton, 1966.