APA (7th ed.) Citation

Dunsheath, P. (1951). A century of technology, 1851-1951. Roy Publishers.

Chicago Style (17th ed.) Citation

Dunsheath, Percy. A Century of Technology, 1851-1951. New York: Roy Publishers, 1951.

MLA (9th ed.) Citation

Dunsheath, Percy. A Century of Technology, 1851-1951. Roy Publishers, 1951.