Gaya APA

PURBOHADIWIDJOJO, M, S, M, S, S. (1979). The volcano tectonic history of the Maninjau Caldera Western Sumatera, Indonesia . : .

Gaya MLA

PURBOHADIWIDJOJO, M.M.;, SJACHRUDIN,, ML.;, SUPARKA,, S.. "The volcano tectonic history of the Maninjau Caldera Western Sumatera, Indonesia". : , 1979. Laporan.