APA (7th ed.) Citation

Simmonds, R. (1911). All about airships: A book for boys. Cassell and Co..

Chicago Style (17th ed.) Citation

Simmonds, Ralph. All About Airships: A Book for Boys. London ; New York: Cassell and Co., 1911.

MLA (9th ed.) Citation

Simmonds, Ralph. All About Airships: A Book for Boys. Cassell and Co., 1911.