Ballantine, J. P.; Jerbert, A. R. (April 1952). "Distance from a Line, or Plane, to a Point". The American Mathematical Monthly. 59 (4): 242. doi:10.2307/2306514.
Payne, R. W. (May 1968). "164. The perpendicular distance from (x′, y′) to ax + by + c = 0". The Mathematical Gazette. 52 (380): 152–152. doi:10.2307/3612683.
Bundrick, Charles M.; Sherry, David L. (April 1978). "Distance From a Point to a Line and a Point to a Plane Via Synthetic Methods". School Science and Mathematics. 78 (4): 304–306. doi:10.1111/j.1949-8594.1978.tb09363.x.
Clarke, L. E. (May 1951). "2212. The shortest distance between two skew lines". The Mathematical Gazette. 35 (312): 120–121. doi:10.2307/3609345.
Johar, Syafiq (21 January 2026). "A New Proof for Distance Between Skew Lines". The College Mathematics Journal: 1–8. doi:10.1080/07468342.2025.2603159.
