APA Edition Citation

Saunders, H. S. G. (1944). Per ardua: The rise of British air power 1911-1939.1944.

Chicago Edition Citation

Saunders, Hilary St. George. Per Ardua: The Rise of British Air Power 1911-1939.1944. 1944.

MLA Edition Citation

Saunders, Hilary St. George. Per Ardua: The Rise of British Air Power 1911-1939.1944. 1944.

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