(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.
Dyfyniad Arddull Chicago(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.
Dyfyniad MLA(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.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.