Constable.

MLA

Constable, William George. Constable. London: Her Majesty's Stationery Office, 1950.

APA

Constable, W. George. (1950). Constable. London: Her Majesty's Stationery Office.

Chicago

Constable, William George Constable. London: Her Majesty's Stationery Office, 1950.