Gaya APA

Pangaribuan, A, M, A. et al (2012). Coastal physical vulnerability of Surabaya and its surrounding area level rise (Vol. 16, No. 2, Tahun). : American foundations information service.

Gaya MLA

Pangaribuan, Aristo, M., A.. et al. "Coastal physical vulnerability of Surabaya and its surrounding area level rise". Vol. 16, No. 2, Tahun : American foundations information service, 2012. Text.