APA (7th ed.) Citation

Hughes, C. N. (1989). Shipboard operational problems. Lloyd's of London Press.

Chicago Style (17th ed.) Citation

Hughes, C. N. Shipboard Operational Problems. London ; New York: Lloyd's of London Press, 1989.

MLA (9th ed.) Citation

Hughes, C. N. Shipboard Operational Problems. Lloyd's of London Press, 1989.