(美)罗伯特·凯德尔(Robert W. Keidel)著. (2018). 战略几何学：战略议题的思维工具：concepts for strategic management. 东方出版社.
Lua i Stíl Chicago (17ú heag.)(美)罗伯特·凯德尔(Robert W. Keidel)著. 战略几何学：战略议题的思维工具：concepts for Strategic Management. 东方出版社, 2018.
Lua MLA (8ú heag.)(美)罗伯特·凯德尔(Robert W. Keidel)著. 战略几何学：战略议题的思维工具：concepts for Strategic Management. 东方出版社, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.