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