J.D, G. F. Sport Funding Through Stamps: Finding Unlikely Revenue Streams. International Journal of Physical Education, Fitness and Sports, [S. l.], v. 12, n. 3, p. 14–33, 2023. DOI: 10.54392/ijpefs2332. Disponível em: https://ijpefs.org/index.php/ijpefs/article/view/519. Acesso em: 3 jul. 2024.