APA (7th ed.) Citation

ProQuest (Firm). (1944). Events leading up to World War II. [publisher not identified].

Chicago Style (17th ed.) Citation

ProQuest (Firm). Events Leading Up to World War II. Washington: [publisher not identified], 1944.

MLA (9th ed.) Citation

ProQuest (Firm). Events Leading Up to World War II. [publisher not identified], 1944.

Warning: These citations may not always be 100% accurate.