APA

McConnell C. R., . (1960). Elementary economics principles, problems, and policies. New York: McGraw-Hill.

Chicago

McConnell Campbell R, . 1960. Elementary economics principles, problems, and policies. New York: McGraw-Hill.

Harvard

McConnell C. R., . (1960). Elementary economics principles, problems, and policies. New York: McGraw-Hill.

MLA

McConnell Campbell R, . Elementary economics principles, problems, and policies. New York: McGraw-Hill. 1960.