APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Howard, A. M., & Shain, R. M. (2005). The spatial factor in African history: The relationship of the social, material, and perceptual. Brill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Allen M. Howard, और Richard M. Shain. The Spatial Factor in African History: The Relationship of the Social, Material, and Perceptual. Leiden ; Boston: Brill, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, et al. The Spatial Factor in African History: The Relationship of the Social, Material, and Perceptual. Brill, 2005.
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