Lua APA (7ú heag.)

Gregory, R. (1971). The origins of American intervention in the First World War ([1st ed.].). Norton.

Lua i Stíl Chicago (17ú heag.)

Gregory, Ross. The Origins of American Intervention in the First World War. [1st ed.]. New York: Norton, 1971.

Lua MLA (9ú heag.)

Gregory, Ross. The Origins of American Intervention in the First World War. [1st ed.]. Norton, 1971.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.