Hardie, Glenn M., author
Prentice-Hall, 1995
Buku Teks
Bibhuti Bhusan Das, Narayanan Neithalath, editors
Springer Nature, 2019
eBooks
Macmillan Education, 1988
Buku Teks
Taylor, G.D.
Longman, 1985
Buku Teks
Allen, Edward, author
John Wiley & Sons, 2009
Buku Teks