Irwansyah, author
American Scientific Publishers, 2016
Artikel Jurnal
Irwansyah, author
Medwell Journals, 2016
Artikel Jurnal
Riska Inki Fitria, author
[Publisher not identified], 2016
Artikel Jurnal
Forsyth, Frederick, 1938-, author
Corgi Books, 1996
Buku Teks
Riska Inki Fitria, author
Universitas Indonesia, 2016
UI - Tesis (Membership)