Zakarneh, Ismael, Ahmad Nassar, Ghait Nassef, and Husein Qadoumi. 2020. “Evaluation of the Opinions of Volleyball Experts Toward the Application of the Pro-Fessional System in West Bank Clubs”. Palestine Technical University Research Journal 8 (3):40-60. https://doi.org/10.53671/pturj.v8i3.112.