The "X" documents /
[by] A. P. Young ; edited by Sidney Aster.
APA Citation
Young, A. P. (Arthur Primrose). (1974). The "X" documents. London: Deutsch.
MLA Citation
Young, A. P. (Arthur Primrose), 1885-1977. The "X" Documents. London: Deutsch, 1974.
Warning: These citations may not always be complete (especially for serials).