Gaya APA
Purwanto, W.
(2012).
Pesona Burung Danau Matano
.
Jakarta:
Tata Optima Pratama.
Gaya MLA
Purwanto, Weldi.
"Pesona Burung Danau Matano".
Jakarta:
Tata Optima Pratama,
2012.
Book.