Julia Dzurillay Twitter Twitter LinkedinJ.D.T.T.L.LinkedinJulia Dzurillay Twitter Twitter LinkedinJ.D.T.T.L., MoreM.ArticlesMoreM., 2020 Published on September 3, Are Scott Hoying and Mitch Grassi From Pentatonix Still Friends? [online], Showbiz Cheat Sheet, 3 września 2020 [dostęp 2021-09-20](ang.).
Bill Lamb BillB.L.B.LambBill Lamb BillB.L.B., Arts Writer with Two Decades of Experience Covering the World ofA.W.T.D.E.C.t. W.EntertainmentArts Writer with Two Decades of Experience Covering the World ofA.W.T.D.E.C.t. W., BillB.LambBillB., The Pentatonix Story [online], LiveAbout [dostęp 2021-09-20](ang.).