APA Style
Executive's portfolio of business letters. (1996).
:
(s.l) : Pustaka Referensia Utama.
Chicago Style
Executive's portfolio of business letters.
.
:
(s.l) : Pustaka Referensia Utama,
1996.
.
MLA Style
Executive's portfolio of business letters.
.
:
(s.l) : Pustaka Referensia Utama,
1996.
.
Turabian Style
Executive's portfolio of business letters.
:
(s.l) : Pustaka Referensia Utama,
1996.
.