Tannsjo, Torbjorn, author
Edinburgh University Press, 2010
Buku Teks
Cambridge University Press, 2015
Buku Teks
Koven, Steven G, author
New York CRC Pres, 2015
Buku Teks
Gillespie, Alexander, author
Oxford University press, 2014
Buku Teks
Rutherford, Mervyn
Currency Press, 1979
Buku Teks