Wanless, H. R. (1973). Aerial stereo photographs, for stereoscope viewing in geology, geography, conservation, forestry, surveying. Hubbard Press.
Lua i Stíl Chicago (17ú heag.)Wanless, Harold R. Aerial Stereo Photographs, for Stereoscope Viewing in Geology, Geography, Conservation, Forestry, Surveying. Northbrook, Ill: Hubbard Press, 1973.
Lua MLA (9ú heag.)Wanless, Harold R. Aerial Stereo Photographs, for Stereoscope Viewing in Geology, Geography, Conservation, Forestry, Surveying. Hubbard Press, 1973.
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