Styl cytowania APA

Ketter, N. (1970). Esch-sur-alzette. editions claude diderich.

Styl cytowania Chicago

Ketter, Norbert. Esch-sur-alzette. Luxembourg: editions claude diderich, 1970.

Styl cytowania MLA

Ketter, Norbert. Esch-sur-alzette. editions claude diderich, 1970.