Gaya APA
Drucker, Peter F. (2017).
Managing oneself .
USA:
Harvard Bussines.
Gaya Chicago
Drucker, Peter F.
Managing oneself.
USA:
Harvard Bussines,
2017.
Text.
Gaya MLA
Drucker, Peter F.
Managing oneself.
USA:
Harvard Bussines,
2017.
Text.
Gaya Turabian
Drucker, Peter F.
Managing oneself.
USA:
Harvard Bussines,
2017.
Print.