Miller, Philip B. (Spring 1974), "Anxiety and Abstraction: Kleist and Brentano on Caspar David Friedrich", Art Journal, 33 (3): 205-210, doi:10.2307/775783, JSTOR775783
Forster-Hahn, Françoise (marts 1976), "Recent Scholarship on Caspar David Friedrich", The Art Bulletin, 58 (1): 113-116, doi:10.2307/3049469, JSTOR3049469
Mitchell, Timothy (september 1984), "Caspar David Friedrich's Der Watzmann: German Romantic Landscape Painting and Historical Geology", The Art Bulletin, 66 (3): 452-464, doi:10.2307/3050447, JSTOR3050447
Kuzniar, Alice (1989), "The Temporality of Landscape: Romantic Allegory and C. D. Friedrich", Studies in Romanticism, 28 (1): 69-93, doi:10.2307/25600760, ISSN0039-3762, JSTOR25600760
guardian.co.uk
Hughes, Robert. "Force of nature". The Guardian, January 15, 2005. Hentet: 2008-11-20.
Miller, Philip B. (Spring 1974), "Anxiety and Abstraction: Kleist and Brentano on Caspar David Friedrich", Art Journal, 33 (3): 205-210, doi:10.2307/775783, JSTOR775783
Forster-Hahn, Françoise (marts 1976), "Recent Scholarship on Caspar David Friedrich", The Art Bulletin, 58 (1): 113-116, doi:10.2307/3049469, JSTOR3049469
Mitchell, Timothy (september 1984), "Caspar David Friedrich's Der Watzmann: German Romantic Landscape Painting and Historical Geology", The Art Bulletin, 66 (3): 452-464, doi:10.2307/3050447, JSTOR3050447
Beenken, Hermann (april 1938), "Caspar David Friedrich", The Burlington Magazine for Connoisseurs, 72 (421): 171-175, JSTOR867281
Börsch-Supan, Helmut (september 1972), "Caspar David Friedrich's Landscapes with Self-Portraits", The Burlington Magazine, 114 (834): 620-630, JSTOR877126
Siegel, Linda (Spring 1974), "Synaesthesia and the Paintings of Caspar David Friedrich", The Art Journal, 33 (3): 196-204, JSTOR775782
Kuzniar, Alice (1989), "The Temporality of Landscape: Romantic Allegory and C. D. Friedrich", Studies in Romanticism, 28 (1): 69-93, doi:10.2307/25600760, ISSN0039-3762, JSTOR25600760
Vaughan, William (september 1991), "Reviewed work(s): Caspar David Friedrich in seiner Zeit: Zeichnungen des Romantik und des Biedermeier af Hans Dickel; The Romantic Vision of Caspar David Friedrich + Painting and Drawings from the USSR af Sabine Rewald; Caspar David Friedrich and the Subject of Landscape by Joseph Leo Koerner", The Burlington Magazine, 133 (1062): 626-628, JSTOR884854
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worldcat.org
Kuzniar, Alice (1989), "The Temporality of Landscape: Romantic Allegory and C. D. Friedrich", Studies in Romanticism, 28 (1): 69-93, doi:10.2307/25600760, ISSN0039-3762, JSTOR25600760
Epstein, Suzanne Latt (1964), The Relationship of the American Luminists to Caspar David Friedrich, New York: Columbia University, OCLC23758262