Franklin

MLA

Northern Gas Board. First Report and Statement of Accounts for the Period 18th January, 1949, to 31st March, 1950. Cambridge [eng.]: Proquest LLC, 2007.

APA

(2007). Northern Gas Board. First report and statement of accounts for the period 18th January, 1949, to 31st March, 1950. Cambridge [eng.]: Proquest LLC.

Chicago

Northern Gas Board. First Report and Statement of Accounts for the Period 18th January, 1949, to 31st March, 1950. Cambridge [eng.]: Proquest LLC, 2007.