Samuelson, P. A., & Crandall, M. S. (1973). Instructor's manual to accompany Samuelson: Economics (9th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Samuelson, Paul Anthony, agus Maureen S. Crandall. Instructor's Manual to Accompany Samuelson: Economics. 9th ed. New York: McGraw-Hill, 1973.
Lua MLA (9ú heag.)Samuelson, Paul Anthony, agus Maureen S. Crandall. Instructor's Manual to Accompany Samuelson: Economics. 9th ed. McGraw-Hill, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.