Grolier Internartional. (1987). Grolier academic encyclopedia: Vol :12. Grolier Internartional , Academic Aremiracan.
Čikaški stil citiranja (17. izdanje)Grolier Internartional. Grolier Academic Encyclopedia: Vol :12. USA: Grolier Internartional , Academic Aremiracan, 1987.
MLA način citiranja (9. izdanje)Grolier Internartional. Grolier Academic Encyclopedia: Vol :12. Grolier Internartional , Academic Aremiracan, 1987.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.