White, Paul, editor
New Star Press, 2010
Buku Teks
edited by Denis Dwyer
Longman Scientific & Technical, 1994
Buku Teks
Dreyer, June Teufel, 1939-, author
Routledge, Taylor and Francis Group, 2019
Buku Teks
Longman Scientific & Technical, 1996
Buku Teks
Schwartz, Harry, author
Atheneum, 1966
Buku Teks