APA (7th ed.) Citation

Barraclough, G. (1964). An introduction to contemporary history / by G. Barraclough. Watts.

Chicago Style (17th ed.) Citation

Barraclough, G. An Introduction to Contemporary History / by G. Barraclough. Watts, 1964.

MLA (9th ed.) Citation

Barraclough, G. An Introduction to Contemporary History / by G. Barraclough. Watts, 1964.

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