References
Nieuport Aces of World War 1. Norman Franks. Osprey Publishing, 2000. ISBN 1-85532-961-1, ISBN 978-1-85532-961-4.
Read more about this topic: William Charles Campbell
References
Nieuport Aces of World War 1. Norman Franks. Osprey Publishing, 2000. ISBN 1-85532-961-1, ISBN 978-1-85532-961-4.
Read more about this topic: William Charles Campbell