Undang, Sushela Marie, Richard Lemence, Rolando Buenavista, and Julius Benitez. “Path Chromatic Index of the Composition of Sone Special Graphs”. ASIA PACIFIC JOURNAL OF SOCIAL INNOVATION 19, no. 1 (April 19, 2024). Accessed September 17, 2024. https://journals.msuiit.edu.ph/tmf/article/view/373.