APA
Hanna P. R., Kohn C. F., Lee J. R. & Ver Steeg C. L. (1970). Investigating man's world: anthropology, economics, geography, history, political, political, sociology. Philippines: Scott, Foresman and Company.
Chicago
Hanna Paul R, Kohn Clyde F, Lee John R and Ver Steeg Clarence L. 1970. Investigating man's world: anthropology, economics, geography, history, political, political, sociology. Philippines: Scott, Foresman and Company.
Harvard
Hanna P. R., Kohn C. F., Lee J. R. and Ver Steeg C. L. (1970). Investigating man's world: anthropology, economics, geography, history, political, political, sociology. Philippines: Scott, Foresman and Company.
MLA
Hanna Paul R, Kohn Clyde F, Lee John R and Ver Steeg Clarence L. Investigating man's world: anthropology, economics, geography, history, political, political, sociology. Philippines: Scott, Foresman and Company. 1970.