Cambridge University Press, 2005
Buku Teks
edited by Egdunas Racius, Antonina Zeljazkova
Brill, 2018
eBooks
Merryman, John Henry, author
Bobbs-Merril, 1978
Buku Teks
Erwin Ramedhan, author
2005
Artikel Jurnal
Dahl, Robert A., 1915-2014, author
Harper & Brothers , 1953
Buku Teks