Gaya APA
Drucker, Peter F.. (1986).
The frontiers of management .
London:
William Hienemann.
Gaya Chicago
Drucker, Peter F..
The frontiers of management.
London:
William Hienemann,
1986.
Buku Teks.
Gaya MLA
Drucker, Peter F..
The frontiers of management.
London:
William Hienemann,
1986.
Buku Teks.
Gaya Turabian
Drucker, Peter F..
The frontiers of management.
London:
William Hienemann,
1986.
Buku Teks.