Chu, Hsi
The Philosophy of human nature
Probsthain, 1922
 Buku Teks SO
Magner, Lois N.
A history of the life sciences
Marcel Dekker, 1994
 Buku Teks
Companion encyclopedia of the history and philosophy of the mathematical sciences; Volume 2
edited by I. Grattan-Guinness
Routledge, 1994
 Buku Referensi
Companion encyclopedia of the history and philosophy of the mathematical sciences; Volume 1
edited by I. Grattan-Guinness
Routledge, 1994
 Buku Referensi
Cohen, Morris R.
The meaning of human history
Open Court, 1961
 Buku Teks SO