Prehistory and protohistory.

MLA

Christopoulos, Georges A, George Phylactopoulos, and Philip Sherrard. Prehistory and Protohistory. Athens: Ekdotikè Athènōn, 1974.

APA

Christopoulos, G. A, Phylactopoulos, G., & Sherrard, P. (1974). Prehistory and protohistory. Athens: Ekdotikè Athènōn.

Chicago

Sherrard, Philip. trans., Georges A Christopoulos ed., and George Phylactopoulos ed. Prehistory and Protohistory. Athens: Ekdotikè Athènōn, 1974.