Cita APA (7th ed.)

Ungerer, T., & Killy, W. (1980). Fornicon: Tomi Ungerer. Vorwort von Walther Killy. Diogenes.

Cita Chicago (17th ed.)

Ungerer, Tomi, i Walther Killy. Fornicon: Tomi Ungerer. Vorwort Von Walther Killy. Zürich: Diogenes, 1980.

Cita MLA (8th ed.)

Ungerer, Tomi, i Walther Killy. Fornicon: Tomi Ungerer. Vorwort Von Walther Killy. Diogenes, 1980.