Avery, T. E., & Berlin, G. L. (1985). Interpretation of aerial photographs (4th ed.). Macmillan.
Lua i Stíl Chicago (17ú heag.)Avery, Thomas Eugene, agus Graydon Lennis Berlin. Interpretation of Aerial Photographs. 4th ed. New York: Macmillan, 1985.
Lua MLA (9ú heag.)Avery, Thomas Eugene, agus Graydon Lennis Berlin. Interpretation of Aerial Photographs. 4th ed. Macmillan, 1985.
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