APA Format
Barkley, Paul W; Barkley, Paul W; Wonnacott, Paul. (1977).
Economics : the way we choose / Paul W.Barkley
. New York :: Harcourt Brace Jovanovich,.
MLA Format
Barkley, Paul W; Barkley, Paul W; Wonnacott, Paul.
Economics : the way we choose / Paul W.Barkley
. New York :: Harcourt Brace Jovanovich,, 1977
Chicago Format
Barkley, Paul W; Barkley, Paul W; Wonnacott, Paul. Economics : the way we choose / Paul W.Barkley. New York :: Harcourt Brace Jovanovich,, 1977.