Gaya APA

Pardyanto, L., Sudradjat, A. (1978). Report on Mayon Volcano Visit, The Philippines (Sponsored by UNESCO) (June 1978). Bandung: U S Geological Survey.

Gaya MLA

Pardyanto, L.., Sudradjat, A.. "Report on Mayon Volcano Visit, The Philippines (Sponsored by UNESCO)". June 1978 Bandung: U S Geological Survey, 1978. Text.