PARRAGON BOOKS LTD. (2016). CHILDREN'S SCIENCE ENCYCLOPEDIA. PARRAGON BOOKS LTD.
Chicago-čujuhus (17. p.)PARRAGON BOOKS LTD. CHILDREN'S SCIENCE ENCYCLOPEDIA. UK: PARRAGON BOOKS LTD, 2016.
MLA-čujuhus (9. p.)PARRAGON BOOKS LTD. CHILDREN'S SCIENCE ENCYCLOPEDIA. PARRAGON BOOKS LTD, 2016.
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