APA

Robinson J. W., Walker R. W., . (1973). Labor economics and labor relations. New York: Ronald Press Co.

Chicago

Robinson James W, Walker Roger W, . 1973. Labor economics and labor relations. New York: Ronald Press Co.

Harvard

Robinson J. W., Walker R. W., . (1973). Labor economics and labor relations. New York: Ronald Press Co.

MLA

Robinson James W, Walker Roger W, . Labor economics and labor relations. New York: Ronald Press Co. 1973.