APA Style
Drucker, Peter F.. (2017).
The Theory of Business .
Boston:
Harvard Business Review Press.
Chicago Style
Drucker, Peter F..
The Theory of Business.
Boston:
Harvard Business Review Press,
2017.
Buku.
MLA Style
Drucker, Peter F..
The Theory of Business.
Boston:
Harvard Business Review Press,
2017.
Buku.
Turabian Style
Drucker, Peter F..
The Theory of Business.
Boston:
Harvard Business Review Press,
2017.
Buku.