DHINGRA PUBLISHING HOUSE. (2005). THE BIG BOOK OF SCIENCE PROJECTS. DHINGRA PUBLISHING HOUSE.
Lua i Stíl Chicago (17ú heag.)DHINGRA PUBLISHING HOUSE. THE BIG BOOK OF SCIENCE PROJECTS. NEW DELHI: DHINGRA PUBLISHING HOUSE, 2005.
Lua MLA (9ú heag.)DHINGRA PUBLISHING HOUSE. THE BIG BOOK OF SCIENCE PROJECTS. DHINGRA PUBLISHING HOUSE, 2005.
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