Bly, P. (2004). The wisdom of eccentric old men: A study of type and secondary character in Galdós's social novels, 1870-1897. McGill-Queen's University Press.

Bly, Peter. The Wisdom of Eccentric Old Men: A Study of Type and Secondary Character in Galdós's Social Novels, 1870-1897. Montreal ; Ithaca: McGill-Queen's University Press, 2004.

Bly, Peter. The Wisdom of Eccentric Old Men: A Study of Type and Secondary Character in Galdós's Social Novels, 1870-1897. McGill-Queen's University Press, 2004.