Παραπομπή APA

Coggle, P., & Schenke, H. (2007). Teach yourself German. McGraw-Hill.

Παραπομπή Chicago Style

Coggle, Paul, και Heiner Schenke. Teach Yourself German. London: McGraw-Hill, 2007.

Παραπομπή MLA

Coggle, Paul, και Heiner Schenke. Teach Yourself German. McGraw-Hill, 2007.