Haardt, G., Audouin-Dubreuil, L., & Citroën, A. (1927). The black journey: Across Central Africa with the Citroën Expedition. Cosmopolitan Book Corporation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHaardt, Georges-Marie, Louis Audouin-Dubreuil, और André Citroën. The Black Journey: Across Central Africa with the Citroën Expedition. New York: Cosmopolitan Book Corporation, 1927.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHaardt, Georges-Marie, et al. The Black Journey: Across Central Africa with the Citroën Expedition. Cosmopolitan Book Corporation, 1927.
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