If you are referring to the source as a whole, it s not necessary to include a page number or other marker.

http://courses.ecornell.com/eportfolios/20891/Valif_20_Mg_Suppository
http://tmiky.instructure.com/eportfolios/9899/SupraxDT_400_Mg_Sodium

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The Exchange has sought clarification from Den Networks Ltd on June 10, 2020 with reference to significant movement in price, in order to ensure that investors have latest relevant information about the company and to inform the market so that the interest of the investors is safeguarded.