Gaya APA

Bronto, S. (1995). Guide Book for Field Excursion : on South and West Slopes of Merapi Volcano . Yogyakarta: Volcanological Survey of Indonesia.

Gaya MLA

Bronto, Sutikno. "Guide Book for Field Excursion : on South and West Slopes of Merapi Volcano". Yogyakarta: Volcanological Survey of Indonesia, 1995. Text.