by Geoff Green ... [and others]
John Murray, 1976
Buku Teks SO
American Association for the Advancement of Science, 2018
Majalah, Jurnal, Buletin
Tillery, Bill W.
McGraw-Hill, 2013
Buku Teks SO
Needham, Joseph
Cambridge University Press, 1996
Buku Referensi
editor, James R. Newman
Harper & Row, 1963
Buku Referensi