Gaya APA
Grey, A, L. (1961).
Economic issues and policies: readings in introductory economics (2nd ed.).
Boston:
Houghton Mifflin Company.
Gaya MLA
Grey, Arthur, L..
"Economic issues and policies: readings in introductory economics".
2nd ed.
Boston:
Houghton Mifflin Company,
1961.
Text.