Kouprin, A. E.
Sir Isaac Pitman & Sons, 1949
Buku Teks
Heath, Joseph, author
Capstone, 2005
Buku Teks
Channell, David F., author
Springer Cham, 2019
eBooks
Mehta, Pavithra K., author
Berrett Koehler, 2011
Buku Teks
Tang, Leang-Li
Noel Douglas, 1927
Buku Teks