Cuadrivio : Cuadrivio Darío, López Valverde, Pessoa, Cernuda /

by Paz, Octavio (1914-1998)
Published 1991

Fernando Pessoa : identidad y diferencia /

by Vázquez Medel, Manuel Ángel
Published 1988

Estudios sobre Pessoa /

by Crespo, Ángel (1926-1995)
Published 1984

Fernando Pessoa /

by García Martín, José Luis (1950-)
Published 1983