APA (7e ed.) Bronvermelding

Flick, L. F. (1920). History as a Science. Annual Address of the President of the American Catholic Historical Association. Washington, D.C..

Chicago (17e ed.) Bronvermelding

Flick, Lawrence F. History as a Science. Annual Address of the President of the American Catholic Historical Association. Washington, D.C., 1920.

MLA (8e ed.) Bronvermelding

Flick, Lawrence F. History as a Science. Annual Address of the President of the American Catholic Historical Association. Washington, D.C., 1920.