https://obs.gumushane.edu.tr/oibs/bologna/index.aspx?lang=tr&curOp=showPac&curUnit=08&curSunit=15225 (YL)
https://obs.gumushane.edu.tr/oibs/bologna/index.aspx?lang=tr&curOp=showPac&curUnit=24&curSunit=25474 (DR)
