APA (7th ed.) Citation

Vogel, G. (2003). Out into nature - Caspar David Friedrich and the early plein-air sketch in Germany.

Chicago Style (17th ed.) Citation

Vogel, Gerd-Helge. Out into Nature - Caspar David Friedrich and the Early Plein-air Sketch in Germany. 2003.

MLA (9th ed.) Citation

Vogel, Gerd-Helge. Out into Nature - Caspar David Friedrich and the Early Plein-air Sketch in Germany. 2003.

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