Gaya APA
Lopulalan, D. et al (2003).
Berau, The Sun in North East Kalimantan : A Travel Guide .
Kalimantan Timur:
Yayasan Kalbu.
Gaya MLA
Lopulalan, Dicky. et al.
"Berau, The Sun in North East Kalimantan : A Travel Guide".
Kalimantan Timur:
Yayasan Kalbu,
2003.
Text.