Cita APA (7a ed.)

Wolf, S. (1987). Briefbogen: Lettepaper. Bruckman.

Cita Chicago Style (17a ed.)

Wolf, Sylvia. Briefbogen: Lettepaper. Munchen: Bruckman, 1987.

Cita MLA (9a ed.)

Wolf, Sylvia. Briefbogen: Lettepaper. Bruckman, 1987.