Gaya APA
Parkin, Michael. (2014).
Economics (11e).
Lucerne:
Pearson Education.
Gaya Chicago
Parkin, Michael.
Economics.
11e
Lucerne:
Pearson Education,
2014.
Buku.
Gaya MLA
Parkin, Michael.
Economics.
11e
Lucerne:
Pearson Education,
2014.
Buku.
Gaya Turabian
Parkin, Michael.
Economics.
11e
Lucerne:
Pearson Education,
2014.
Buku.