Directorium historicorum S. I. : of the historians.

MLA

Blewett, John Edward. Directorium Historicorum S. I. : of the Historians. Rome: International Center for Jesuit Education, 1976.

APA

Blewett, J. Edward. (1976). Directorium historicorum S. I. : of the historians. Rome: International Center for Jesuit Education.

Chicago

Blewett, John Edward, Directorium Historicorum S. I.: Of the Historians. Rome: International Center for Jesuit Education, 1976.