MELÉNDEZ, Héctor. Wheen, Francis. Karl Marx. Londres: Fourth Estate, 1999. Revista de Ciencias Sociales, [S. l.], v. 10, p. 140–148, 2001. Disponível em: https://revistas.upr.edu/index.php/rcs/article/view/6056. Acesso em: 3 may. 2024.