MASHURI, Mashuri, 		ZULKARNAIN, Zulkarnain, 		ZULFADIL, Zulfadil, AND 		SUWONDO, Suwondo.
" Green Investment Model for Smallholder Oil Palm Plantation in Bengkalis Riau" <em>Journal of Environmental Management and Tourism</em> [Online], Volume 12 Number 7 (1 December 2021)