Jacobsen, Dean, author
Oxford University Press, 2017
eBooks
Korner, Christian
Springer, 2012
eBooks
Reynolds, C.S., author
Cambridge University Press, 1993
Buku Teks
Brewer, Richard, author
Saunders College Publishing, 1994
Buku Teks
Ehrlich, Paul R., author
Macmillan, 1987
Buku Teks