Ireland, Daryl R. "John Sung: Christian revitalization in China and Southeast Asia"(PDF). Boston University Theses & Dissertations. Retrieved January 10, 2018. p.42 NOTE: Introduced to Christ by Aimee Semple McPherson at the age of 9, the child Uldine Utley soon afterwards became a revivalist and in 1926–27 was preaching in Madison Square Gardens, Carnegie Hall and elsewhere in New York. Robinson, Thomas A. Uldine Mabelle Utley (1912–1995); Assemblies of God AG Heritage Magazine 2013 p42
reavivamentos.com
"A Biography of John Sung". C.I.M. Overseas Missionary Fellowship; Newington Green, London N.10 1954 reprinted 1967. Retrieved January 10, 2018.Appendix One
