Khalatnikov, Isaak M., author
[Springer, ], 2012
eBooks
Inas Fathyasyifa Shabrina, author
2017
UI - Skripsi (Membership)
Weber, Eugen, author
Boston: D.C.Heath and Company, (1959).
Buku Teks
Artikel Jurnal
Ehrlich, Paul R., author
Sierra Club/ballantine, 1971
Buku Teks