APA (7th ed.) Citation

Campo Villegas, G. Claretian Martyrs of Barbastro.

Chicago Style (17th ed.) Citation

Campo Villegas, Gabriel. Claretian Martyrs of Barbastro.

MLA (9th ed.) Citation

Campo Villegas, Gabriel. Claretian Martyrs of Barbastro.

Warning: These citations may not always be 100% accurate.