APA (7th ed.) Zitazioa

Helps, A. (1855). The Spanish Conquest in America. John W. Parker and Son, West Strand.

Chicago Style (17th ed.) Zitazioa

Helps, Arthur. The Spanish Conquest in America. London, England, United Kingdom: John W. Parker and Son, West Strand, 1855.

MLA (9th ed.) Zitazioa

Helps, Arthur. The Spanish Conquest in America. John W. Parker and Son, West Strand, 1855.