Grolier International. (1987). Grolier Academic Encyclopedia: Vol :2. Grolier International,Academic American.
Chicago Style aipamenaGrolier International. Grolier Academic Encyclopedia: Vol :2. USA: Grolier International,Academic American, 1987.
MLA aipamenaGrolier International. Grolier Academic Encyclopedia: Vol :2. Grolier International,Academic American, 1987.
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