APA Style
Melvin, M, -, B, W. (c2013).
Principles of economics (Phil. ed.).
Singapore:
Cengage Learning Australia Pty Limited.
MLA Style
Melvin, Michael, -, Boyes,, William.
"Principles of economics".
Phil. ed.
Singapore:
Cengage Learning Australia Pty Limited,
c2013.
Text.