Isaias Giya sa Pag-research Para sa Mga Saksi ni Jehova—Edisyon 2019 61:5 An Torrengbantayan,12/15/2012, p. 254/1/2007, p. 255/15/1997, p. 197/1/1995, p. 23-251/1/1991, p. 17 An Torrengbantayan, 6/15/2003, p. 28
61:5 An Torrengbantayan,12/15/2012, p. 254/1/2007, p. 255/15/1997, p. 197/1/1995, p. 23-251/1/1991, p. 17 An Torrengbantayan, 6/15/2003, p. 28