Cita APA (7th ed.)

Lieback, P. (1984). How children learn mathematics: A guide for parents and teachers. Penguin.

Cita Chicago (17th ed.)

Lieback, Pamela. How Children Learn Mathematics: A Guide for Parents and Teachers. Harmondsworth, Middlesex, Eng: Penguin, 1984.

Cita MLA (9th ed.)

Lieback, Pamela. How Children Learn Mathematics: A Guide for Parents and Teachers. Penguin, 1984.