APA (7th ed.) Citation

Frequenz. Fachverlag Schiele & Schön GmbH.

Chicago Style (17th ed.) Citation

Frequenz. Berlin: Fachverlag Schiele & Schön GmbH.

MLA (8th ed.) Citation

Frequenz. Fachverlag Schiele & Schön GmbH.

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