(2010). My pals are here! science: Research base (International ed.). Marshall Cavendish Education.
Chicago-viite (17. p.)My Pals Are Here! Science: Research Base. International ed. Singapore: Marshall Cavendish Education, 2010.
MLA-viite (9. p.)My Pals Are Here! Science: Research Base. International ed. Marshall Cavendish Education, 2010.
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