Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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