H. Rizkia and W. Anita Sari, “Supply Chain of Organic Salak Pondoh (Salacca zalacca var.pondoh) in Pagar Alam City- South Sumatera Province”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 4, no. 2, pp. 87–89, Apr. 2014.