Huggins, Robert A., author
Springer International Publishing, 2016
eBooks
Artikel Jurnal
Dasent, W.E., author
Cambridge University Press; IKIP Semarang Press, 1982
Buku Teks
Job, Georg, author
Springer International Publishing, 2016
eBooks
Upadhyaya, G.S., author
Pergamon Press, 1977
Buku Teks