Wallerstein, Judith S., author
Hyperion, 2000
Buku Teks
Konefsky, Samuel J., author
Macmillan, 1957
Buku Teks
Boby R. Nugraha, author
Fakultas Teknik Universitas Indonesia, 2017
UI - Skripsi (Membership)
MPH Group , 2010
Buku Referensi
Wells, H.G., author
Lon
Buku Teks