APA

KRAMER S., . (1966). Cradle Of Civilization. NEW YORK: TIME INCORPORATED.

Chicago

KRAMER SAMUEL, . 1966. Cradle Of Civilization. NEW YORK: TIME INCORPORATED.

Harvard

KRAMER S., . (1966). Cradle Of Civilization. NEW YORK: TIME INCORPORATED.

MLA

KRAMER SAMUEL, . Cradle Of Civilization. NEW YORK: TIME INCORPORATED. 1966.