Cita APA (7th ed.)

Pick, F. W. (1949). Contemporary history. The Pen-In-Hand.

Cita Chicago (17th ed.)

Pick, F. W. Contemporary History. Oxford: The Pen-In-Hand, 1949.

Cita MLA (8th ed.)

Pick, F. W. Contemporary History. The Pen-In-Hand, 1949.