SINAGA, Tulus; TULUS CORNALIUS SINAGA; GEBRIL SARAGIH; OKY MANULLANG; ARDIANTO SINURAT. Creative Thinking Process of University Students In Designing a Stirling Engine From Recycled Materials: a Qualitative Study. International Journal of Energy Systems and Materials Innovation, [S. l.], v. 1, n. 3, p. 141–145, 2026. Disponível em: https://journal.gioedutech.id/index.php/IJESMI/article/view/35. Acesso em: 1 sep. 2026.