APA (7th ed.) Citation

Hubbard, R. G., & O'Brien, A. P. Macroeconomics (2nd edition.).

Chicago Style (17th ed.) Citation

Hubbard, R. Glenn, and Anthony Patrick O'Brien. Macroeconomics. 2nd edition.

MLA (9th ed.) Citation

Hubbard, R. Glenn, and Anthony Patrick O'Brien. Macroeconomics. 2nd edition.

Warning: These citations may not always be 100% accurate.