Akbar Agustian, Muhammad, et al. “Pengaruh Metode Drill Fixed Target Terhadap Akurasi Pukulan Forehand Groundstroke Atlet Pickleball Unesa”. Jurnal Ilmiah STOK Bina Guna Medan, vol. 14, no. 1, Mar. 2026, pp. 131-9, doi:10.55081/jsbg.v14i1.5721.