Routledge, 2015
eBooks
Gillespie, Alexander
Oxford University press, 2014
Buku Teks
Golany, Gideon S.
John Wiley & Sons, 1995
Buku Teks
Wasserman, Barry
John Wiley & Sons, 2000
Buku Teks
Reynolds, George Walter, 1944-
Cengage Learning, 2019
Buku Teks