Charles A Happer
USA : McGraw-Hill, Inc., 1970
Buku Teks
editor, Andrea Deplazes
Birkauser, 2005
Buku Referensi
ASM International, 1989
Buku Referensi
Young, James F.
John Wiley & Sons, 1959
Buku Teks SO
edited by Oksana Ostroverkhova
Woodhead, 2013
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