APA

Drucker P. F., . (2017). Managing oneself and what makes an effective executive. Boston, USA: Harvard business Review Press.

Chicago

Drucker Peter F, . 2017. Managing oneself and what makes an effective executive. Boston, USA: Harvard business Review Press.

Harvard

Drucker P. F., . (2017). Managing oneself and what makes an effective executive. Boston, USA: Harvard business Review Press.

MLA

Drucker Peter F, . Managing oneself and what makes an effective executive. Boston, USA: Harvard business Review Press. 2017.