APA (7th ed.) Citation

Lieber, F. A Code for the Government of Armies in the Field, as authorized by the laws and usages of war on land.

Chicago Style (17th ed.) Citation

Lieber, Francis. A Code for the Government of Armies in the Field, as Authorized by the Laws and Usages of War on Land.

MLA (9th ed.) Citation

Lieber, Francis. A Code for the Government of Armies in the Field, as Authorized by the Laws and Usages of War on Land.

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