Nurhasan, N. et al. 2023. Training of trainer coaching clinic Petanque di Jawa Timur. Lumbung Inovasi: Jurnal Pengabdian kepada Masyarakat. 8, 1 (Mar. 2023), 110–118. DOI:https://doi.org/10.36312/linov.v8i1.1215.