Wanless, H. R. (1973). Aerial stereo photographs, for stereoscope viewing in geology, geography, conservation, forestry, surveying. Hubbard Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWanless, Harold R. Aerial Stereo Photographs, for Stereoscope Viewing in Geology, Geography, Conservation, Forestry, Surveying. Northbrook, Ill: Hubbard Press, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWanless, Harold R. Aerial Stereo Photographs, for Stereoscope Viewing in Geology, Geography, Conservation, Forestry, Surveying. Hubbard Press, 1973.
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