TOKTAŞ, Yılmaz, ve Ali ALTINER. 2018. “BOLU İLİNİN DIŞ TİCARET YAPISININ SEKTÖR, ÜLKE Ve ÜRÜN BAZLI ANALİZİ”. International Journal of Social and Humanities Sciences Research (JSHSR) 5 (31):4649-55. https://doi.org/10.26450/jshsr.917.