Cita APA (7a ed.)

BALLARD, C. (2001). HOW DO WE THINK (1st.). HODDER CHILDREN'S BOOKS.

Cita Chicago Style (17a ed.)

BALLARD, CAROL. HOW DO WE THINK. 1st. LONDON: HODDER CHILDREN'S BOOKS, 2001.

Cita MLA (9a ed.)

BALLARD, CAROL. HOW DO WE THINK. 1st. HODDER CHILDREN'S BOOKS, 2001.