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Shannon 2010,第197頁. Shannon, Edward A. Something Black in the American Psyche: Formal Innovation and Freudian Imagery in the Comics of Winsor McCay and Robert Crumb. Canadian Review of American Studies. 2010, 40 (2): 187–211. ISSN 1710-114X. doi:10.3138/cras.40.2.187.
Shannon 2010,第191–193頁. Shannon, Edward A. Something Black in the American Psyche: Formal Innovation and Freudian Imagery in the Comics of Winsor McCay and Robert Crumb. Canadian Review of American Studies. 2010, 40 (2): 187–211. ISSN 1710-114X. doi:10.3138/cras.40.2.187.
Shannon 2010,第197頁. Shannon, Edward A. Something Black in the American Psyche: Formal Innovation and Freudian Imagery in the Comics of Winsor McCay and Robert Crumb. Canadian Review of American Studies. 2010, 40 (2): 187–211. ISSN 1710-114X. doi:10.3138/cras.40.2.187.
Shannon 2010,第191–193頁. Shannon, Edward A. Something Black in the American Psyche: Formal Innovation and Freudian Imagery in the Comics of Winsor McCay and Robert Crumb. Canadian Review of American Studies. 2010, 40 (2): 187–211. ISSN 1710-114X. doi:10.3138/cras.40.2.187.