APA (7th ed.) Citation

Armstrong, R. (1975). Powered ships / (by) Richard Armstrong. E. Benn.

Chicago Style (17th ed.) Citation

Armstrong, Richard. Powered Ships / (by) Richard Armstrong. London (etc.): E. Benn, 1975.

MLA (9th ed.) Citation

Armstrong, Richard. Powered Ships / (by) Richard Armstrong. E. Benn, 1975.

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