Cita APA (American Psychological Association)

Graham, W. (1820). Travels through Portugal and Spain, during the peninsular war. [s.n.].

Citación Chicago Style

Graham, William. Travels Through Portugal and Spain, During the Peninsular War. London: [s.n.], 1820.

Cita MLA (Modern Language Association of America)

Graham, William. Travels Through Portugal and Spain, During the Peninsular War. [s.n.], 1820.