Lua APA (7ú heag.)
Pirenne, H., & Halsey, F. D. (1925). Medieval cities: Their origins and the revival of trade. Doubleday.
Lua i Stíl Chicago (17ú heag.)
Pirenne, Henri, agus Frank D. Halsey. Medieval Cities: Their Origins and the Revival of Trade. New York: Doubleday, 1925.
Lua MLA (9ú heag.)
Pirenne, Henri, agus Frank D. Halsey. Medieval Cities: Their Origins and the Revival of Trade. Doubleday, 1925.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.