Lua APA (7ú heag.)

QUALLEN, S. B. (2006). CHAMPIONSHIP SCIENCE FAIR PROJECTS. GOODWILL PUBLISHING HOUSE.

Lua i Stíl Chicago (17ú heag.)

QUALLEN, SUDIPTA. BARDHAN. CHAMPIONSHIP SCIENCE FAIR PROJECTS. NEW DELHI: GOODWILL PUBLISHING HOUSE, 2006.

Lua MLA (9ú heag.)

QUALLEN, SUDIPTA. BARDHAN. CHAMPIONSHIP SCIENCE FAIR PROJECTS. GOODWILL PUBLISHING HOUSE, 2006.

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