(April, 2011) Apples profit is now higher than Microsoft [Electronic version] <
. < 4.05.2011
. Alava, J. (1999) Organizational change in the union of professional engineers in Finland and the union of professional social workers in Finland. Dissertation. University of Kentucky. p>. Yarrow J., Angelova K, (2010) CHART OF THE DAY: Apple Trumps Microsoft In Revenue For The First Time In 14 Years [Electronic version] < 3.05.2011
