Siahaan, David, Manotar Sinaga, Yan Indra Siregar, Pangondian H Purba, dan Mawardinur Mawardinur. “Evaluasi Keterampilan Dasar Tenis: Penerapan International Tennis Number Bagi Mahasiswa”. Indonesian Journal of Physical Education and Sport Science 6, no. 3 (Agustus 27, 2026): 660-673. Diakses Agustus 31, 2026. http://journal.unucirebon.ac.id/index.php/ijpess/article/view/2192.