Gaya APA
Parkin, Michael. (2019).
Economics (13e).
Harlow:
Pearson Education.
Gaya Chicago
Parkin, Michael.
Economics.
13e
Harlow:
Pearson Education,
2019.
Buku.
Gaya MLA
Parkin, Michael.
Economics.
13e
Harlow:
Pearson Education,
2019.
Buku.
Gaya Turabian
Parkin, Michael.
Economics.
13e
Harlow:
Pearson Education,
2019.
Buku.