APA (7th ed.) Citation

Tucker, S. (2019). World War I: A country-by-country guide. ABC-CLIO.

Chicago Style (17th ed.) Citation

Tucker, Spencer. World War I: A Country-by-country Guide. Santa Barbara, California: ABC-CLIO, 2019.

MLA (9th ed.) Citation

Tucker, Spencer. World War I: A Country-by-country Guide. ABC-CLIO, 2019.