Khairuddin, N. I. .; Rashid, . M. H. A.; Mohamad, . H. A. .; Rahman, A. L. A. .; Nath, P. R. .; Salam, U. .; Mambetniyazov, M. . Language and Communication Students’ Perceived Mastery in AI Chatbot Prompt Engineering: A Study on Vibe Coding in Educational Mobile Application Development. IJLTER 2026, 25, 379-403.