Gaya APA
PRESS, O, U.
(1978).
Pend. Bahasa Inggris.English for Secretaries
.
LONDON:
Oxford University Press.
Gaya MLA
PRESS, OXFORD, UNIVERSITY.
"Pend. Bahasa Inggris.English for Secretaries".
LONDON:
Oxford University Press,
1978.
Text.