APA aipamena

Parker, U. S. (1920). Elements of economics for high schools (Rev. ed.). Irwin printing co..

Chicago Style aipamena

Parker, Ulysses Simpson. Elements of Economics for High Schools. Rev. ed. [Quincy, Ill.: Irwin printing co., 1920.

MLA aipamena

Parker, Ulysses Simpson. Elements of Economics for High Schools. Rev. ed. Irwin printing co., 1920.