APA (7th ed.) Citation

Ellis, C. (1981). Tanks of World War 2. London : Octopus Books.

Chicago Style (17th ed.) Citation

Ellis, Chris. Tanks of World War 2. London : Octopus Books, 1981.

MLA (9th ed.) Citation

Ellis, Chris. Tanks of World War 2. London : Octopus Books, 1981.

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