Boulogne, a base in France
MLA
Hardie, Martin. Boulogne: a Base In France. London: A. & C. Black, limited, 1918
APA, 7th edition
Hardie, M. (1918). Boulogne: a base in France. London: A. & C. Black, limited
Chicago, 17th edition
Hardie, Martin. Boulogne: a base in France. London: A. & C. Black, limited, 1918