Pelc, Jerzy, author
Mouton, 1971
Buku Teks
edited by Adrian Walker
Addison-Wesley, 1987
Buku Teks
Carnap, Rudolf, author
Littlefield, Adams , 1959
Buku Teks
Keenan, Edward L.
Springer Science, 2012
eBooks
Krulee, Gilbert K., author
Prentice-Hall, 1991
Buku Teks