Gaya APA
Tress of the Balikpapan-Samarinda area, East Kalimantan, Indonesia. (1994).
Wageningen:
The tropenbos foundation.
Gaya MLA
Tress of the Balikpapan-Samarinda area, East Kalimantan, Indonesia.
.
Wageningen:
The tropenbos foundation,
1994.
Buku.