Services for Steve R. Laterra, 31, Roeland Park, who died July 11, 1989, at the home, will be at 10 a.m. Friday at the Amos Family Chapel, Shawnee; burial in Mount Hope Cemetery.  Friends may call from 7 to 8:30 p.m. today at the chapel.  Mr. Laterra was a lifelong area resident.  He had been a data processing worker for United Telecommunications Inc. since 1970's.  He was a member of St. Agnes Catholic Church.  Survivors include a son, Steven Michael Laterra, Kansas City, Kan,; his mother and stepfather, Bonnie M. Laterra and Richard Burris of Stockton, Mo.;a sister, Diane Bolei, Williamsburg, Kan.;and his maternal grandfather, W.R. Banks, Kansas City, Kan.