APA (7th ed.) Citation

Kahn, O. H. (2009). War Taxation Some Comments and Letters. Project Gutenberg.

Chicago Style (17th ed.) Citation

Kahn, Otto Hermann. War Taxation Some Comments and Letters. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Kahn, Otto Hermann. War Taxation Some Comments and Letters. Project Gutenberg, 2009.

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