APA (7th ed.) Citation

Young, A. P. (1974). The "X" documents. Deutsch.

Chicago Style (17th ed.) Citation

Young, A. P. The "X" Documents. London: Deutsch, 1974.

MLA (8th ed.) Citation

Young, A. P. The "X" Documents. Deutsch, 1974.

Warning: These citations may not always be 100% accurate.