APA (7th ed.) Citation

Schäfer, H. (1850). Geschichte von Portugal. Perthes.

Chicago Style (17th ed.) Citation

Schäfer, Heinrich. Geschichte Von Portugal. Hamburg: Perthes, 1850.

MLA (8th ed.) Citation

Schäfer, Heinrich. Geschichte Von Portugal. Perthes, 1850.

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