[1]
Melvyn P. Leffler 1999. The Cold War: What Do ‘We Now Know’? The American Historical Review. 104, 2 (1999), 501–524.
[2]
Pride, W.M. et al. 2002. Business. Houghton Mifflin Co.
[3]
Shuster, La 2011. BUSINESS. Civil Engineering. 81, 1 (2011).