Cita APA

Leaf, M., & Lawson, R. (1993). Ferdinand. Diogenes Verlag.

Citación estilo Chicago

Leaf, Munro, y Robert Lawson. Ferdinand. Zürich: Diogenes Verlag, 1993.

Cita MLA

Leaf, Munro, y Robert Lawson. Ferdinand. Diogenes Verlag, 1993.