Cita APA (7a ed.)

(1989). Lutz Brockhaus: Katalog 1989/90.

Cita Chicago Style (17a ed.)

Lutz Brockhaus: Katalog 1989/90. Berlin, 1989.

Cita MLA (8a ed.)

Lutz Brockhaus: Katalog 1989/90. 1989.