E. L. Sitompul, D. F. Sibagariang, A. M. Togatorop, I. S. Tarigan, and I. K. Daulay, “THE IMPLEMENTATION OF PEN-PAL PROJECT TO TEACH WRITING SKILL OF RECOUNT TEXT AT THE EIGHT CLASS OF SMP NASRANI 1 MEDAN”, BIP, vol. 2, no. 1, pp. 68-75, Mar. 2020.