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
Donny Gahral Adian
Penelusuran anti metafisika: sebuah kajian filsafat antropologi
Universitas Indonesia, 2000
 UI - Tesis Membership
Loux, Michael J.
Metaphysics: a contemporary introduction
Routledge, 2002
 Buku Teks
Bakker, Anton
Antologi atau metafisika umum : filsafat pengada dan dasar-dasar kenyataan
Kanisius, 1992
 Buku Teks