Ladyman, James, author
Routledge, 2002
Buku Teks
Bowker-Saur, 2018
Majalah, Jurnal, Buletin
Peason, Karl
Meridian Books , 1957
Buku Teks
Sederberg, Peter C.
Chandler & Sharp Publishers, 1977
Buku Teks
Butterfield, Herbert
The Free Press , 1957
Buku Teks