APA (7th ed.) Citation

Mayer, S., & Koenig, W. (1976). The two world wars: A guide to manuscript collections in the United Kingdom. Bowker.

Chicago Style (17th ed.) Citation

Mayer, S.L, and W.J Koenig. The Two World Wars: A Guide to Manuscript Collections in the United Kingdom. London: Bowker, 1976.

MLA (8th ed.) Citation

Mayer, S.L, and W.J Koenig. The Two World Wars: A Guide to Manuscript Collections in the United Kingdom. Bowker, 1976.