Cita APA

Elton, G. R. (1984). Herbert Butterfield and the study of history. The historical journal.

Citación estilo Chicago

Elton, G. R. "Herbert Butterfield and the Study of History." The Historical Journal 1984.

Cita MLA

Elton, G. R. "Herbert Butterfield and the Study of History." The Historical Journal, 1984.