Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Seo Gang-Hoon,A Study of Marketing Mix Theory and Its Issues,修道商学,03875083,広島修道大学ひろしま未来協創センター,2024-02-29,64,2,1-14,https://cir.nii.ac.jp/crid/1390300147449568640,https://doi.org/10.15097/0002000076