WALLACE, R. L. (1983). Those who have vanished: An introduction to prehistory. Dorsey Pr..
Chicago Style (17th ed.) ZitazioaWALLACE, Ronald L. Those Who Have Vanished: An Introduction to Prehistory. Homewood, Ill: Dorsey Pr., 1983.
MLA (9th ed.) ZitazioaWALLACE, Ronald L. Those Who Have Vanished: An Introduction to Prehistory. Dorsey Pr., 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.