Gaya APA

Swanson, C, P. (NULL). Dupont the autobiography of an Amaerican enterprise . New: New York: E.I. Du Pont De Numours; 1952.

Gaya MLA

Swanson, Carl, P.. "Dupont the autobiography of an Amaerican enterprise". New: New York: E.I. Du Pont De Numours; 1952, NULL. Text.