APA (7th ed.) Citation

Roubier, J., & Babelon, J. (1959). Great coins and medals. Viking Press.

Chicago Style (17th ed.) Citation

Roubier, Jean, and Jean Babelon. Great Coins and Medals. New York]: Viking Press, 1959.

MLA (9th ed.) Citation

Roubier, Jean, and Jean Babelon. Great Coins and Medals. Viking Press, 1959.