MLA

Chambers, Clarke A, and Fred W Kohlmeyer. The Cooperative League of the United States of America, 1916-1961 : a Study of Social Theory and Social Action. Agricultural History Society, 1962.

APA

Chambers, C. A, & Kohlmeyer, F. W. (1962). The Cooperative League of the United States of America, 1916-1961 : a study of social theory and social action. Agricultural History Society.

Chicago

Chambers, Clarke A., and Fred W Kohlmeyer. The Cooperative League of the United States of America, 1916-1961: A Study of Social Theory and Social Action. : Agricultural History Society, 1962.