(1973). last two million years: History of man. Readers Digest Association.
Chicago Edition CitationLast Two Million Years: History of Man. London: Readers Digest Association, 1973.
ציטוט MLALast Two Million Years: History of Man. Readers Digest Association, 1973.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.