APA (7th ed.) Citation

Halliday & Cumings. (1988). Korea: The unknown war. Penguin Books.

Chicago Style (17th ed.) Citation

Halliday and Cumings. Korea: The Unknown War. United States: Penguin Books, 1988.

MLA (8th ed.) Citation

Halliday and Cumings. Korea: The Unknown War. Penguin Books, 1988.

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