Barker, E. (1928). National character and the factors in its formation: By Ernest Barker (2nd ed.). Methuen.
Lua i Stíl Chicago (17ú heag.)Barker, Ernest. National Character and the Factors in Its Formation: By Ernest Barker. 2nd ed. London: Methuen, 1928.
Lua MLA (8ú heag.)Barker, Ernest. National Character and the Factors in Its Formation: By Ernest Barker. 2nd ed. Methuen, 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.