Gaya APA
Whitehead, geoffrey B.sc. (1973).
Office practice made simple .
London:
W.h Allen.
Gaya Chicago
Whitehead, geoffrey B.sc.
Office practice made simple.
London:
W.h Allen,
1973.
Text.
Gaya MLA
Whitehead, geoffrey B.sc.
Office practice made simple.
London:
W.h Allen,
1973.
Text.
Gaya Turabian
Whitehead, geoffrey B.sc.
Office practice made simple.
London:
W.h Allen,
1973.
Print.