Syed Ambon, S. A. E., Md Nor, M. F., Syed Mudayah, S. I., & Mohamad Hashim, J. (2017). Prestasi kecergasan daya tahan kardiovaskular pemain Ragbi Agong Cup’s Negeri Kedah Darul Aman berdasarkan ujian pacer 20-meter Multistage Shuttle Run: Cardiovascular endurancefitness performance among Kedah Rugby Agong Cup’s players based on 20-meter Multistage Shuttle Run pacer test. Jurnal Sains Sukan & Pendidikan Jasmani, 6(2), 55-64. https://doi.org/10.37134/jsspj.vol6.2.6.2017