APA (7th ed.) Citation

Gill, C. (1961). Merchants and mariners of the 18th century / by Conrad Gill. Arnold.

Chicago Style (17th ed.) Citation

Gill, Conrad. Merchants and Mariners of the 18th Century / by Conrad Gill. Arnold, 1961.

MLA (9th ed.) Citation

Gill, Conrad. Merchants and Mariners of the 18th Century / by Conrad Gill. Arnold, 1961.

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