Grolier Internartional. (1987). Grolier academic encyclopedia: Vol :12. Grolier Internartional , Academic Aremiracan.
Chicago Style (17. basım) AtıfGrolier Internartional. Grolier Academic Encyclopedia: Vol :12. USA: Grolier Internartional , Academic Aremiracan, 1987.
MLA (9th ed.) AtıfGrolier Internartional. Grolier Academic Encyclopedia: Vol :12. Grolier Internartional , Academic Aremiracan, 1987.
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