Gaya APA
Al-Banjari, R, R.
(2012).
Be Happy At Work
(
-, Cet. 1)
.
Jogjakarta:
FlashBooks.
Gaya MLA
Al-Banjari, Rachmat, Ramadhana.
"Be Happy At Work".
-, Cet. 1
Jogjakarta:
FlashBooks,
2012.
Non Fiksi.