APA
Ehrich R. W., . (1954). Relative Chronologies in Old World Archeology. Chicago: Univ. of Chicago Press.
Chicago
Ehrich Robert W, . 1954. Relative Chronologies in Old World Archeology. Chicago: Univ. of Chicago Press.
Harvard
Ehrich R. W., . (1954). Relative Chronologies in Old World Archeology. Chicago: Univ. of Chicago Press.
MLA
Ehrich Robert W, . Relative Chronologies in Old World Archeology. Chicago: Univ. of Chicago Press. 1954.
