APA-čujuhus (7. p.)

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

Chicago-čujuhus (17. p.)

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

MLA-čujuhus (9. p.)

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

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