Cita APA (7a ed.)

Herr, R. (1971). Spain. Prentice-Hall.

Cita Chicago Style (17a ed.)

Herr, Richard. Spain. Englewood Cliffs: Prentice-Hall, 1971.

Cita MLA (9a ed.)

Herr, Richard. Spain. Prentice-Hall, 1971.