Isaias Giya sa Pag-research Para sa Mga Saksi ni Jehova—Edisyon 2019 60:2 An Torrengbantayan,7/1/2002, p. 9-113/1/2001, p. 121/1/2000, p. 11-124/1/1993, p. 9-101/15/1993, p. 12-13 An Torrengbantayan, 9/15/2003, p. 23-24 An Torrengbantayan, 6/1/1987, p. 26-27
60:2 An Torrengbantayan,7/1/2002, p. 9-113/1/2001, p. 121/1/2000, p. 11-124/1/1993, p. 9-101/15/1993, p. 12-13 An Torrengbantayan, 9/15/2003, p. 23-24 An Torrengbantayan, 6/1/1987, p. 26-27