Poignant, Axel, author
Angus and Robertson, 1965
Buku Teks
Macmillan Press, 1978
Buku Teks
Perez-Cabal, Ma Angeles, editor
Wageningen Academic, 2011
eBooks
Childress, Stephen, editor
[Springer, ], 2012
eBooks
Russell, Nerissa, 1957-, author
Cambridge University Press, 2012
Buku Teks