"Surat". Encyclopædia Britannica. Encyclopædia Britannica, inc. 6 August 2014. Archived from the original on 10 January 2018. Retrieved 9 January 2018.
"Surat". Encyclopædia Britannica. Encyclopædia Britannica, inc. 6 August 2014. Archived from the original on 10 January 2018. Retrieved 9 January 2018.