APA Style
Mankiw, N, G. (2021).
Principles Of Economics : Ninth Edition (Ed. 9).
Singapore:
Chengange Learning Asia Pte Ltd.
MLA Style
Mankiw, N., Gregory.
"Principles Of Economics : Ninth Edition".
Ed. 9
Singapore:
Chengange Learning Asia Pte Ltd,
2021.
Text.