Gaya APA

Jr, G, R., Vondra, C, F. (1981). Hominid Sites : Their Geologic Settings . Washington, D.C.: AAAS Selected simposium.

Gaya MLA

Jr, George, Rapp,., Vondra, Carl, F.. "Hominid Sites : Their Geologic Settings". Washington, D.C.: AAAS Selected simposium, 1981. Text.