ANDRIADI, A.; ISMAIL, R.; FIKARWIN, F.; BADARUDDIN, B.; MANURUNG, R.; SITORUS, H. Coffee Marketing Mechanism: Social Relations Between Farmers, Collectors, Certification Cooperatives, and Exporters in Aceh, Indonesia. Pelita Perkebunan (a Coffee and Cocoa Research Journal), v. 35, n. 2, p. 156-166, 31 ago. 2019.