The Second World War :
a guide to documents in the Public Record Office /
John D. Cantwell.

APA Citation

Cantwell, J. D., Great Britain. Public Record Office. (1993). The Second World War: a guide to documents in the Public Record Office. 2nd ed. London: HMSO.

MLA Citation

Cantwell, John D, and Great Britain. Public Record Office. The Second World War: a Guide to Documents In the Public Record Office. 2nd ed. London: HMSO, 1993.

Warning: These citations may not always be complete (especially for serials).