APA
SAMUELSON\ PAUL A, . (1964). ECONOMICS. N.Y: AEGRAW-HILL.
Chicago
SAMUELSON\ PAUL A, . 1964. ECONOMICS. N.Y: AEGRAW-HILL.
Harvard
SAMUELSON\ PAUL A, . (1964). ECONOMICS. N.Y: AEGRAW-HILL.
MLA
SAMUELSON\ PAUL A, . ECONOMICS. N.Y: AEGRAW-HILL. 1964.