Caspar David Friedrich : : Winter landscape ; Painting in focus (exhibition London, National Gallery, 28.03 - 28.05.1990).

MLA

Leighton, John, and Colin John Bailey. Caspar David Friedrich : Winter Landscape ; Painting In Focus (exhibition London, National Gallery, 28.03 - 28.05.1990). London: National Gallery Publications Limited, 1990.

APA

Leighton, J., & Bailey, C. John. (1990). Caspar David Friedrich : Winter landscape ; Painting in focus (exhibition London, National Gallery, 28.03 - 28.05.1990). London: National Gallery Publications Limited.

Chicago

Leighton, John, and Colin John Bailey. Caspar David Friedrich: Winter Landscape ; Painting In Focus (exhibition London, National Gallery, 28.03 - 28.05.1990). London: National Gallery Publications Limited, 1990.