Kaplan, Morton A., author
John Wiley & Sons, 1961
Buku Teks
edited by Brian Opeskin, Richard Perruchoud, Jillyanne Redpath-Cross
Cambridge University Press,, 2012
Buku Teks
edited by Edward McWhinney [and others]
Martinus Nijhoff Publishers, 1991
Buku Teks
Nye, Joseph S., author
Longman, 1997
Buku Teks
Presses Universitaires de France, 1951
Buku Teks