Gaya APA

Perwito, . (2009). World heritage nature & culture under the protection of unesco Eropa Utara [Referensi] (Vol.6.--). Jakarta : Batara.

Gaya MLA

Perwito, . "World heritage nature & culture under the protection of unesco Eropa Utara [Referensi]". Vol.6.-- Jakarta : Batara, 2009. Buku.