APA (7th ed.) Citation

Phelps, J. (2020). Australian code breakers. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Phelps, James. Australian Code Breakers. Sydney, NSW ; New York, NY, USA: HarperCollins Publishers, 2020.

MLA (9th ed.) Citation

Phelps, James. Australian Code Breakers. HarperCollins Publishers, 2020.

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