APA (7th ed.) Citation

Watts, O. M. (1942). The sextant simplified: A practical explanation of the use of the sextant at sea. T. Reed.

Chicago Style (17th ed.) Citation

Watts, Oswald Martin. The Sextant Simplified: A Practical Explanation of the Use of the Sextant at Sea. Sunderland [England]: T. Reed, 1942.

MLA (9th ed.) Citation

Watts, Oswald Martin. The Sextant Simplified: A Practical Explanation of the Use of the Sextant at Sea. T. Reed, 1942.