APA (7th ed.) Citation

Keen, R. (1938). Wireless direction finding (3d and enl. ed.). Iliffe.

Chicago Style (17th ed.) Citation

Keen, Roland. Wireless Direction Finding. 3d and enl. ed. London: Iliffe, 1938.

MLA (9th ed.) Citation

Keen, Roland. Wireless Direction Finding. 3d and enl. ed. Iliffe, 1938.

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