Harianto, E., 		Nursalam, L., 		Ikhsan, F., 		Zakaria, Z., 		Damhuri, D., & 		Sejati, A.
2019 Aug 28.  THE COMPATIBILITY OF OUTDOOR STUDY APPLICATION OF ENVIRONMENTAL SUBJECT USING PSYCHOLOGICAL THEORIES OF INTELLIGENCE AND MEANINGFUL LEARNING IN SENIOR HIGH SCHOOL. Geosfera Indonesia. [Online] 4:2