APA

Groman G. L., . (1967). Political literature of the Progressive era. [East Lansing]: Michigan State University Press.

Chicago

Groman George L, . 1967. Political literature of the Progressive era. [East Lansing]: Michigan State University Press.

Harvard

Groman G. L., . (1967). Political literature of the Progressive era. [East Lansing]: Michigan State University Press.

MLA

Groman George L, . Political literature of the Progressive era. [East Lansing]: Michigan State University Press. 1967.