APA (7th ed.) Citation

Mayer, S. L., & Koenig, W. J. (1976). The two World Wars: A guide to manuscript coll. in the United Kingdom. Bowker.

Chicago Style (17th ed.) Citation

Mayer, Sydney L., and William J. Koenig. The Two World Wars: A Guide to Manuscript Coll. in the United Kingdom. London: Bowker, 1976.

MLA (8th ed.) Citation

Mayer, Sydney L., and William J. Koenig. The Two World Wars: A Guide to Manuscript Coll. in the United Kingdom. Bowker, 1976.