Cita APA

Harman, R. V., Tucker, H. R., & Wrench, J. E. (1934). American citizenship practice. The University publishing.

Citación estilo Chicago

Harman, Robert Valentine, Henry R. Tucker, and Jesse Ervin Wrench. American Citizenship Practice. Lincoln, Chicago [etc.]: The University publishing, 1934.

Cita MLA

Harman, Robert Valentine, et al. American Citizenship Practice. The University publishing, 1934.