Gaya APA
Samuelson, Paul A., Samuelson, William. (1980).
Economics (11td. Ed.).
London:
Mc Graw Hill.
Gaya Chicago
Samuelson, Paul A., Samuelson, William.
Economics.
11td. Ed.
London:
Mc Graw Hill,
1980.
Text.
Gaya MLA
Samuelson, Paul A., Samuelson, William.
Economics.
11td. Ed.
London:
Mc Graw Hill,
1980.
Text.
Gaya Turabian
Samuelson, Paul A., Samuelson, William.
Economics.
11td. Ed.
London:
Mc Graw Hill,
1980.
Print.