APA (7th ed.) Citation

Coles, W., & Koreik, U. (1991). Simple etiquette in Germany (East & West). Simple Books Ltd.

Chicago Style (17th ed.) Citation

Coles, Waltraud, and Uwe Koreik. Simple Etiquette in Germany (East & West). Sandgate, Folkestone, Kent: Simple Books Ltd, 1991.

MLA (9th ed.) Citation

Coles, Waltraud, and Uwe Koreik. Simple Etiquette in Germany (East & West). Simple Books Ltd, 1991.