Crenshaw, Nadine
Prima Tech, 1998
Buku Teks SO
Tate, Allen, editor
New York: GP Putnam's Sons, 1938
Buku Teks
Pritchard, Jim
American Management Association, 2006
eBooks
Turgenev, Ivan Sergeyevich
Penguin Books, 2016
Buku Teks
Turgenev, Ivan Sergeyevich
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks