Samuelson, P. A. (1973). Instructor's manual to accompany Samuelson: Economics, 9th edition. McGraw-Hill.
Citazione stile Chigago Style (17a edizione)Samuelson, Paul A. Instructor's Manual to Accompany Samuelson: Economics, 9th Edition. New York: McGraw-Hill, 1973.
Citatione MLA (9a ed.)Samuelson, Paul A. Instructor's Manual to Accompany Samuelson: Economics, 9th Edition. McGraw-Hill, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.