Tillery, Bill W., author
McGraw-Hill, 2013
Buku Teks
Hinwood, Barry G., author
Bailliere Tindal , 1981
Buku Teks
American Association for the Advancement of Science, 2018
Majalah, Jurnal, Buletin
Geoff Green, Ken Petford, Alan Short, David Walker
John Muray, 1975
Buku Referensi
Pomeroy, John H.
Holt, Rinehart and Winston, 1964
Buku Teks