Wood, J. C. (1985). David Ricardo: Critical assessments. Croom Helm.
Lua i Stíl Chicago (17ú heag.)Wood, John Cunningham. David Ricardo: Critical Assessments. London: Croom Helm, 1985.
Lua MLA (9ú heag.)Wood, John Cunningham. David Ricardo: Critical Assessments. Croom Helm, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.