Young, Jay A.
Macmillan, 1978
Buku Teks
Young, Brian
The Nuffield Foundation, 1967
Buku Teks
National Research Council
National Academy Press, 2006
Buku Teks
Yana Rubiyana, author
Indonesian Institute of Science (LIPI). Research Center for Biotechnology, 2015
Artikel Jurnal
Tro, Nivaldo J., author
Thomson, Brooks/Cole, 2007
Buku Teks