Gaya APA
Schwab, Klaus. (2016).
The Fourth Industrial Revolution .
UNITED STATES OF AMERICA:
crown publishing group.
Gaya Chicago
Schwab, Klaus.
The Fourth Industrial Revolution.
UNITED STATES OF AMERICA:
crown publishing group,
2016.
BUKU_TP.
Gaya MLA
Schwab, Klaus.
The Fourth Industrial Revolution.
UNITED STATES OF AMERICA:
crown publishing group,
2016.
BUKU_TP.
Gaya Turabian
Schwab, Klaus.
The Fourth Industrial Revolution.
UNITED STATES OF AMERICA:
crown publishing group,
2016.
BUKU_TP.