List of Church talks and Articles (from Church library - official Church site):

"The Aaronic Priesthood and the Sacrament", Dallin Oaks, Gen. Conf., Oct. 1998, Priesthood Session

Howard W. Hunter,  Gen. Conf.,  April 1977 - "Thoughts on the Sacrament"

“Always Have His Spirit,” Dallin H. Oaks - Ensign, Nov. 1996, 59

“Enjoying Sacrament Meeting with Children,” Ensign, July 1989, 40

Melvin J. Ballard, “Classic Discourses from the General Authorities: The Sacramental Covenant,” New Era, Jan. 1976, 7