Lua APA (7ú heag.)

LEVETE, S. (2010). RESOURCES OUR WORLD: GLASS. S.CHAND PUBLISHING.

Lua i Stíl Chicago (17ú heag.)

LEVETE, SARAH. RESOURCES OUR WORLD: GLASS. NEW DELHI: S.CHAND PUBLISHING, 2010.

Lua MLA (9ú heag.)

LEVETE, SARAH. RESOURCES OUR WORLD: GLASS. S.CHAND PUBLISHING, 2010.

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