Marlando Wawolumaya, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2011
UI - Tesis (Open)
Carnap, Rudolf, author
Dover Publications, 1958
Buku Teks
Dalen, Dirk van, author
Springer-Verlag, 1994
Buku Teks
Copi, Irving M., author
Prentice-Hall, 1979
Buku Teks
Sulistomo Adie Suwarno, author
Universitas Indonesia, 2005
UI - Skripsi (Membership)