Nguyen, Bao Khac Quoc
The relationship between global wealth and happiness: An analytical study of returns and volatility spillovers
Elsevier, 2021
 Artikel Jurnal
Searle, John R.
Mind, language and society: philosophy in the real world
A Member of the Perseus Books Group, 1998
 Buku Teks
Bakker, Anton
Antologi atau metafisika umum : filsafat pengada dan dasar-dasar kenyataan
Kanisius, 1992
 Buku Teks
Matgioi
La voie metaphysique / Matgioi
Éditions traditionnelles, 1936
 Buku Teks
Taylor, Richard
Metaphysics / Richard Taylor
Englewood Cliffs : A Simon & Schuster, 1992
 Buku Teks