Cita APA (7th ed.)

Holborn, H. (1971). Germany and Europe: Historical essays. Doubleday.

Cita Chicago (17th ed.)

Holborn, Hajo. Germany and Europe: Historical Essays. Nueva York: Doubleday, 1971.

Cita MLA (9th ed.)

Holborn, Hajo. Germany and Europe: Historical Essays. Doubleday, 1971.