Ethridge, Marcus E.
Wadsworth, 2010
Buku Teks SO
American Association for the Advancement of Science, 2018
Majalah, Jurnal, Buletin
by Geoff Green ... [and others]
John Murray, 1976
Buku Teks SO
Tillery, Bill W.
McGraw-Hill, 2013
Buku Teks SO
Derry, Gregory N.
Princeton University Press , 1999
Buku Teks SO