He attributed the success to the team's hard work.
Tips
grammar
Always followed by the cause: 把 X 归因于 Y ('attribute X to Y'). Functions as a three-character verb where the final 于 is a literary preposition meaning 'to.' In psychology, 归因 ('attribution') is the standard translation of attribution theory.
register
Formal/written. In conversation people more often say 是因为… or 怪/赖…. 归因于 is the journalist's, scientist's, and analyst's word for 'attributable to.'
