Cita APA (7th ed.)

Kaufmann, G. (1974). Paperweights & Kuriose Postkarten. Altonaer Museum.

Cita Chicago (17th ed.)

Kaufmann, Gerhard. Paperweights & Kuriose Postkarten. Hamburg: Altonaer Museum, 1974.

Cita MLA (8th ed.)

Kaufmann, Gerhard. Paperweights & Kuriose Postkarten. Altonaer Museum, 1974.