APA
Hyndley V. (., United Kingdon. National Coal Board, . (1950). Annual report and statement of accounts for the year ended 31st December 1949. London: His Majesty's Stationery Office.
Chicago
Hyndley Viscount (Chairman), United Kingdon. National Coal Board, . 1950. Annual report and statement of accounts for the year ended 31st December 1949. London: His Majesty's Stationery Office.
Harvard
Hyndley V. (., United Kingdon. National Coal Board, . (1950). Annual report and statement of accounts for the year ended 31st December 1949. London: His Majesty's Stationery Office.
MLA
Hyndley Viscount (Chairman), United Kingdon. National Coal Board, . Annual report and statement of accounts for the year ended 31st December 1949. London: His Majesty's Stationery Office. 1950.