Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Omori Haruyoshi,"Marketing Strategy Analysis of Direct Publishing, Inc. : Shift from “Business Model with Limit in Customer Purchasing"" to “Continuous Customer Purchasing""",国際マネジメント研究,,青山学院大学大学院国際マネジメント学会,2020-03,9,,66-82,https://cir.nii.ac.jp/crid/1390290699554413568,https://doi.org/10.34321/21546