SRIDHAR, M. S. Are Books ’Inferior Goods’ of Leisure Industry?. Journal of Information and Knowledge, [S. l.], v. 34, n. 4, p. 159–162, 1997. DOI: 10.17821/srels/1997/v34i4/48755. Disponível em: https://srels.org/index.php/sjim/article/view/48755. Acesso em: 3 mar. 2025.