Cita APA (7th ed.)

Kier, U. H. (1991). Footprints (600 Exemplare.). pig & palmtree press.

Cita Chicago (17th ed.)

Kier, Udo; Hein. Footprints. 600 Exemplare. New York [u.a.]: pig & palmtree press, 1991.

Cita MLA (8th ed.)

Kier, Udo; Hein. Footprints. 600 Exemplare. pig & palmtree press, 1991.