APA (7e ed.) Bronvermelding

Johnson, H. J. T. (1933). Vatican diplomacy in the world war. B. Blackwell.

Chicago (17e ed.) Bronvermelding

Johnson, Humphrey J. T. Vatican Diplomacy in the World War. Oxford: B. Blackwell, 1933.

MLA (8e ed.) Bronvermelding

Johnson, Humphrey J. T. Vatican Diplomacy in the World War. B. Blackwell, 1933.