Gaya APA
Parkin, Michael. (2019).
Economics (13th ed.).
London:
Pearson.
Gaya Chicago
Parkin, Michael.
Economics.
13th ed.
London:
Pearson,
2019.
Text.
Gaya MLA
Parkin, Michael.
Economics.
13th ed.
London:
Pearson,
2019.
Text.
Gaya Turabian
Parkin, Michael.
Economics.
13th ed.
London:
Pearson,
2019.
Print.