Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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