Scott Frickel; Kelly Moore, editor
University of Wisconsin Press , 2006
Buku Teks
Evans, Graham, author
Harvester Wheatsheaf, 1990
Buku Referensi
Dahl, Robert A., 1915-2014, author
Harper & Brothers , 1953
Buku Teks
Gwynneth Singleton ... [et al.]
Pearson, 2013
Buku Teks
Mosley, Leonard, author
Jaico Publishing House, 1966
Buku Teks