Cita APA (7a ed.)

Campo Villegas, G. (2002). The 51 Blessed claretian martyrs of barbastro. [s.n].

Cita Chicago Style (17a ed.)

Campo Villegas, Gabriel. The 51 Blessed Claretian Martyrs of Barbastro. Fátima (portugal): [s.n], 2002.

Cita MLA (9a ed.)

Campo Villegas, Gabriel. The 51 Blessed Claretian Martyrs of Barbastro. [s.n], 2002.