Gurmit Singh. (1966). Islam & Sikhism: A comparative study. Usha Institute of Religious Studies.
Čikaški stil citiranja (17. izdanje)Gurmit Singh. Islam & Sikhism: A Comparative Study. Sirsa: Usha Institute of Religious Studies, 1966.
MLA način citiranja (8. izdanje)Gurmit Singh. Islam & Sikhism: A Comparative Study. Usha Institute of Religious Studies, 1966.
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