por Bellman, Geoffrey M, 1938- [autor].
por Block, Peter [autor] | Jáuregui Lorda, Graciela [traductor] | Turner, Laura [traductor] | Block, Peter. Empowered manager.
por Cohen, Allan R [autor] | Bradford, David L [autor] | Leal, Aníbal [traductor] | Cohen, Allan R. Influence without authority.