Cairns-Smith, A.G., author
Cambridge University Press, 1996
Buku Teks
Humprey, Nicholas
New York Springer-Verlag , 1999
Buku Teks
Sturgeon, Scott, 1961-, author
Routledge, 2000
Buku Teks
Alexander Moreira-Almeida, Franklin Santana Santos, editors
Springer, 2012
eBooks
Overstreet, H.A.
W.W Norton & Company, Inc, 1959
Buku Teks