Darcy, Martin Cyril
Faber and Faber , 1959
Buku Teks
Peter Ewen Limited, 1933
Buku Teks
Hall, Manly P.
Penguin Books, 2005
Buku Teks
Simen Andersen Øyen, editor
[, Wageningen Academic], 2012
eBooks
Emoto, Masaru
Gramedia Pustaka Utama, 2006
Buku Teks