Cita APA (7th ed.)

Knoll, M. (1984). Wintertouristik. Tourist Verlag.

Cita Chicago (17th ed.)

Knoll, Manfred. Wintertouristik. Berlin: Tourist Verlag, 1984.

Cita MLA (8th ed.)

Knoll, Manfred. Wintertouristik. Tourist Verlag, 1984.