APA aipamena

University of Chicago. Industrial Relations Center. (1967). Exchange: Elementary school economics III (Field test ed.). Industrial Relations Center, University of Chicago.

Chicago Style aipamena

University of Chicago. Industrial Relations Center. Exchange: Elementary School Economics III. Field test ed. Chicago: Industrial Relations Center, University of Chicago, 1967.

MLA aipamena

University of Chicago. Industrial Relations Center. Exchange: Elementary School Economics III. Field test ed. Industrial Relations Center, University of Chicago, 1967.