APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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