APA (7th ed.) Citation

Gaston,M J. (1991). Tugs & towing: A worldwide survey of the vessels,techniques and development of the towage business. Patrick Stephens limited.

Chicago Style (17th ed.) Citation

Gaston,M J. Tugs & Towing: A Worldwide Survey of the Vessels,techniques and Development of the Towage Business. Great Britain: Patrick Stephens limited, 1991.

MLA (9th ed.) Citation

Gaston,M J. Tugs & Towing: A Worldwide Survey of the Vessels,techniques and Development of the Towage Business. Patrick Stephens limited, 1991.