Gaya APA
SAMUELSON, PAUL A.. (1955).
ECONOMICS FIFTEENTH EDITION .
NORTH AMERICA:
MCGRAW HILL.
Gaya Chicago
SAMUELSON, PAUL A..
ECONOMICS FIFTEENTH EDITION.
NORTH AMERICA:
MCGRAW HILL,
1955.
Text.
Gaya MLA
SAMUELSON, PAUL A..
ECONOMICS FIFTEENTH EDITION.
NORTH AMERICA:
MCGRAW HILL,
1955.
Text.
Gaya Turabian
SAMUELSON, PAUL A..
ECONOMICS FIFTEENTH EDITION.
NORTH AMERICA:
MCGRAW HILL,
1955.
Print.