APA Edition Citation

Carr, E. H. (1961). Twenty years crisis 1919-1939: An introduction to the study of international relations.

Chicago Edition Citation

Carr, Edward Hallett. Twenty Years Crisis 1919-1939: An Introduction to the Study of International Relations. 1961.

MLA Edition Citation

Carr, Edward Hallett. Twenty Years Crisis 1919-1939: An Introduction to the Study of International Relations. 1961.

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