Gaya APA
Samuelson, Paul A, Nordhaus, William D. (2005).
Economics (18e).
Boston:
McGraw Hill.
Gaya Chicago
Samuelson, Paul A, Nordhaus, William D.
Economics.
18e
Boston:
McGraw Hill,
2005.
Buku.
Gaya MLA
Samuelson, Paul A, Nordhaus, William D.
Economics.
18e
Boston:
McGraw Hill,
2005.
Buku.
Gaya Turabian
Samuelson, Paul A, Nordhaus, William D.
Economics.
18e
Boston:
McGraw Hill,
2005.
Buku.