Gaya APA

Becker, J. (1984). Investigation For Perlite, Silica Sand Fuller's Earth Potash Feldspar (Also Small-Scale Mining) in The Philippines . Bandung: .

Gaya MLA

Becker, Jaques. "Investigation For Perlite, Silica Sand Fuller's Earth Potash Feldspar (Also Small-Scale Mining) in The Philippines". Bandung: , 1984. Text.