APA (7th ed.) Citation

Warner, G. T., & Marten, C. H. K. (1924). The groundwork of British history. Blackie and Son limited.

Chicago Style (17th ed.) Citation

Warner, George Townsend, and Clarence Henry Kennett Marten. The Groundwork of British History. London ; India ; Canada: Blackie and Son limited, 1924.

MLA (8th ed.) Citation

Warner, George Townsend, and Clarence Henry Kennett Marten. The Groundwork of British History. Blackie and Son limited, 1924.