Gaya APA

Johnston, D, A. (1982). David A. Johnston Cascades Volcano Observatory Monthly Report August 1982 (Agustus 1982). Washington: University of Washington.

Gaya MLA

Johnston, David, A.. "David A. Johnston Cascades Volcano Observatory Monthly Report August 1982". Agustus 1982 Washington: University of Washington, 1982. Text.