APA Style

DAUGHERTY, C, R., DAUGHERTY, M, R. (1950). Principles of Political Economy, Volume 2 . Boston: Houghton Mifflin Company.

MLA Style

DAUGHERTY, CARROLL, R.., DAUGHERTY, MARION, R.. "Principles of Political Economy, Volume 2". Boston: Houghton Mifflin Company, 1950. Text.