Gaya APA

Schiller, B, R. (2003). Student Problem Set For Use With : The Economy Today,The Macro Economy Tody,The Micro Economy Today (9). USA: McGraw-Hill.

Gaya MLA

Schiller, Bradley, R.. "Student Problem Set For Use With : The Economy Today,The Macro Economy Tody,The Micro Economy Today". 9 USA: McGraw-Hill, 2003. Text.