SahideM. A. K., BurnsS., WibowoA., NurrochmatD. R., and GiessenL. “Towards State Hegemony Over Agricultural Certification: From Voluntary Private to Mandatory State Regimes on Palm Oil in Indonesia”. Jurnal Manajemen Hutan Tropika, Vol. 21, no. 3, Dec. 2015, pp. 162-71, https://journal.ipb.ac.id/index.php/jmht/article/view/10798.