Gaya APA
Samuelson, Paul A. (1985).
Economics (12e).
New York:
McGraw Hill.
Gaya Chicago
Samuelson, Paul A.
Economics.
12e
New York:
McGraw Hill,
1985.
Buku.
Gaya MLA
Samuelson, Paul A.
Economics.
12e
New York:
McGraw Hill,
1985.
Buku.
Gaya Turabian
Samuelson, Paul A.
Economics.
12e
New York:
McGraw Hill,
1985.
Buku.