APA (7th ed.) Citation

Riehl, R. (1977). Reiseführer DDR. Tourist Verlag.

Chicago Style (17th ed.) Citation

Riehl, Rudolf. Reiseführer DDR. Berlin: Tourist Verlag, 1977.

MLA (8th ed.) Citation

Riehl, Rudolf. Reiseführer DDR. Tourist Verlag, 1977.

Warning: These citations may not always be 100% accurate.