Purnomo, Eddy, Joko Pekik Irianto, and Mansur Mansur. 2020. “Respons Molekuler Beta Endorphin Terhadap Variasi Intensitas Latihan Pada Atlet Sprint”. Jurnal Keolahragaan 8 (2):183-94. https://doi.org/10.21831/jk.v8i2.33833.