Cita APA (7th ed.)

Kasper, W., & Baumgartner, K. (2006). A - Barcelona. Herder.

Cita Chicago (17th ed.)

Kasper, Walter, i Konrad Baumgartner. A - Barcelona. Freiburg i.Br. [u.a.]: Herder, 2006.

Cita MLA (8th ed.)

Kasper, Walter, i Konrad Baumgartner. A - Barcelona. Herder, 2006.