Tudi Kernalegenn, Emilie van Haute (担当:分担執筆, 範囲:External Voting without Political Parties Abroad? Comparing Japan, South Korea and Taiwan (with Jisun Park and Boyu Chen))
Robert Harmel, Lars G. Svåsand (担当:分担執筆, 範囲:Inverse Relationship between Party Institutionalisation and Party System Competitiveness: The Transformation of Postwar Japanese Party Politics (with Hidenori Tsutsumi))
Rowman & Littlefield International, in partnership with ECPR Press 2019年3月 (ISBN: 9781785523021)
Da-Chi Liao, Boyu Chen, Michael J. Jensen (担当:分担執筆, 範囲:Voting Advice Applications in Japan: An Overview (with Hidenori Tsutsumi) / The Effects of VAAs on Voter’s Sophistication in Japan (with Hidenori Tsutsumi and Kazunori Inamasu))