APA Style
Utama, P, R. (2002).
Executive's complete portfolio of business letters (Cet.3).
{S.l]:
Pustaka Referensia Utama.
MLA Style
Utama, Pustaka, Referensia.
"Executive's complete portfolio of business letters".
Cet.3
{S.l]:
Pustaka Referensia Utama,
2002.
Text.