Gaya APA
Melvin, Michael, Boyes, William. (2013).
Principles of Economics (9th ed.).
Canada:
South-Western Cengage Learning.
Gaya Chicago
Melvin, Michael, Boyes, William.
Principles of Economics.
9th ed.
Canada:
South-Western Cengage Learning,
2013.
Teks.
Gaya MLA
Melvin, Michael, Boyes, William.
Principles of Economics.
9th ed.
Canada:
South-Western Cengage Learning,
2013.
Teks.
Gaya Turabian
Melvin, Michael, Boyes, William.
Principles of Economics.
9th ed.
Canada:
South-Western Cengage Learning,
2013.
Teks.