APA

Salvatore D., Diulio E. A., .Schaum's outline of theory and problems of principles of economics. New York: McGraw-Hill.

Chicago

Salvatore Dominick, Diulio Eugene A, .Schaum's outline of theory and problems of principles of economics. New York: McGraw-Hill.

Harvard

Salvatore D., Diulio E. A., .Schaum's outline of theory and problems of principles of economics. New York: McGraw-Hill.

MLA

Salvatore Dominick, Diulio Eugene A, .New York: McGraw-Hill. .