APA
Cyril E. Black, . (1993). Our World History. New York: Ginn and Company.
Chicago
Cyril E. Black, . 1993. Our World History. New York: Ginn and Company.
Harvard
Cyril E. Black, . (1993). Our World History. New York: Ginn and Company.
MLA
Cyril E. Black, . Our World History. New York: Ginn and Company. 1993.
