MADHUBAN EDU. BOOKS. (2003). WHAT IS A HUMPBACK WHALE. VIKAS PUBLICATION HOUSE.
Chicago-viite (17. p.)MADHUBAN EDU. BOOKS. WHAT IS A HUMPBACK WHALE. NEW DELHI: VIKAS PUBLICATION HOUSE, 2003.
MLA-viite (9. p.)MADHUBAN EDU. BOOKS. WHAT IS A HUMPBACK WHALE. VIKAS PUBLICATION HOUSE, 2003.
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