APA (7th ed.) Citation

Angell, N. (1930). Must it be war? / by N. Angell. Labour Book Service.

Chicago Style (17th ed.) Citation

Angell, N. Must It Be War? / by N. Angell. Labour Book Service, 1930.

MLA (9th ed.) Citation

Angell, N. Must It Be War? / by N. Angell. Labour Book Service, 1930.

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