Gaya APA
Cyssco, D, R. (1998).
English conversation n correspondence for secretaries / Dhanny R. Cyssco .
Jakarta:
Puspa Swara.
Gaya MLA
Cyssco, Dhanny, R..
"English conversation n correspondence for secretaries / Dhanny R. Cyssco".
Jakarta:
Puspa Swara,
1998.
Textbook.