By Fresco, Juan Carlos.
Buenos Aires : Macchi, 1991 .
372 p. :il. ; 22 cm. 9505371926

By Hodge, Billy J..
New York : Krieger, 1981 .
531 p. ; 23,5 cm. 089874086X

By Cardozo, Alejandro Pablo.
Buenos Aires : Temas Grupo Editorial, 2011 .
611 p. ; 23 cm. 9789509445345

By Porret Gelabert, Miquel.
Madrid : ESIC, 2010 .
605 p. ; 23,5 cm. 9788473566933

By Pérez Van Morlegan, Luis.
Buenos Aires : Prenctice Hall-Pearson Educación, 2011 .
341 p. ; 23 cm. 9789876151344

By Porter, Donald E..
Pennsylvania : International Texbook Company, 1968 .
741 p. ; 23 cm.