APA (7th ed.) Citation

Sharpe, R., Lewis, D., & Auerbach, G. (1979). Der Egowecker = The success factor. Ullstein.

Chicago Style (17th ed.) Citation

Sharpe, Robert, David Lewis, and Georg Auerbach. Der Egowecker = The Success Factor. Frankfurt/M, Berlin, Wien: Ullstein, 1979.

MLA (9th ed.) Citation

Sharpe, Robert, et al. Der Egowecker = The Success Factor. Ullstein, 1979.