APA (7th ed.) Citation

Seddicum, P. C. (1930). New coal tipping apparatus for south Wales docks. [publisher not identified].

Chicago Style (17th ed.) Citation

Seddicum, Paul C. New Coal Tipping Apparatus for South Wales Docks. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Seddicum, Paul C. New Coal Tipping Apparatus for South Wales Docks. [publisher not identified], 1930.