APA (7th ed.) Citation

Schellenberg, W., Hagen, L., & Bullock, A. (1956). The Schellenberg memoirs. Deutsch.

Chicago Style (17th ed.) Citation

Schellenberg, Walter, Louis Hagen, and Alan Bullock. The Schellenberg Memoirs. London: Deutsch, 1956.

MLA (8th ed.) Citation

Schellenberg, Walter, et al. The Schellenberg Memoirs. Deutsch, 1956.