Gaya APA

Sumadia, . (1999). Hutan The Forest (Aneka Wajah Bumi ( The Features of the Earth)). jakarta: Tira Pustaka.

Gaya MLA

Sumadia, . "Hutan The Forest". Aneka Wajah Bumi ( The Features of the Earth) jakarta: Tira Pustaka, 1999. Text.