GUSTAFSON, Hans S. Mover of Energies. Sikh Research Journal, [S. l.], v. 7, n. 2, p. 25–26, 2022. DOI: 10.62307/srj.v7i2.34. Disponível em: https://sikhresearchjournal.org/index.php/srj/article/view/34. Acesso em: 24 jun. 2024.