APA (7th ed.) Citation

Westerman, P. F. (2011). Billy Barcroft, R.N.A.S. A story of the Great War. Project Gutenberg.

Chicago Style (17th ed.) Citation

Westerman, Percy F. Billy Barcroft, R.N.A.S. A Story of the Great War. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Westerman, Percy F. Billy Barcroft, R.N.A.S. A Story of the Great War. Project Gutenberg, 2011.

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