APA (7th ed.) Citation

Schrader, F. U. Frederick the Great and the Seven Years' War.

Chicago Style (17th ed.) Citation

Schrader, Ferdinand; Upton. Frederick the Great and the Seven Years' War.

MLA (9th ed.) Citation

Schrader, Ferdinand; Upton. Frederick the Great and the Seven Years' War.

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