Veith, G. J. (2012). Black April: The fall of South Vietnam, 1973-1975 (First American edition.). Encounter Books.
Lua i Stíl Chicago (17ú heag.)Veith, George J. Black April: The Fall of South Vietnam, 1973-1975. First American edition. New York: Encounter Books, 2012.
Lua MLA (9ú heag.)Veith, George J. Black April: The Fall of South Vietnam, 1973-1975. First American edition. Encounter Books, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.