edited by Sam Zhang
CRC press, 2011
Buku Teks
Tompkins, Andrew S., author
Oxford University Press, 2016
eBooks
Pelto, Pertti J.
Cambridge University press, 1978
Buku Teks
edited by Frank S. Barnes and Ben Greenebaum
CRC Press, Taylor & Francis, 2007
Buku Referensi
D. Jennings ... [et al.]
Edward Arnold, 1995
Buku Teks