Coba jelasin Rujukan dari Ibu pejabat dalam bahasa melayu dong

Isby, David C. (1988)  Weapons and Tactics of the Soviet Army  Jane's, London: 516 pp.

Wanner, Herbert (2006)  Global and regional corporate headquarters  in: Kählin, Christian, H. (Editor): Switzerland Business & Investment Handbook; Orell Füssli and Wiley.

Wanner, Herbert; LeClef, Xavier, & Shimizu, Hiroshi (2004)  Global Headquarters on the Move: From Administrators to Facilitators  Prims Second Semester 2004; Arthur D. Little.