GRIJP, Paul Van Der. The Paradox of the Philatelic Business: Turning a Private Collection into a Professional Trade. Revue de la culture matérielle, [S. l.], v. 76, 2012. Disponível em: https://journals.lib.unb.ca/index.php/MCR/article/view/21408. Acesso em: 17 juill. 2024.