APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Gill, Conrad. Merchants and Mariners of the 18th Century. London: E. Arnold, 1961.

MLA (9th ed.) Citation

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