PM pays tribute to quiet hero Sir Bill Birch  NZ HeraldTributes flow for Sir William Birch at a service farewelling the former finance minister  RNZVale Sir Bill Birch, a minister who mattered  thepost.co.nzSir Bill Birch: Politicians prepare to farewell former Finance Minister known for ‘legendary diligence’  NZ HeraldArchitect of NZ’s Think Big projects and ex-finance minister dies  Newstalk ZB