APA (7th ed.) Citation

Gruppe, O. F. (1843). Carl Friedrich Schinkel . [s.n.].

Chicago Style (17th ed.) Citation

Gruppe, Otto Friedrich. Carl Friedrich Schinkel . Berlin: [s.n.], 1843.

MLA (9th ed.) Citation

Gruppe, Otto Friedrich. Carl Friedrich Schinkel . [s.n.], 1843.

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