Mills, Gordon H.
Holt, Rinehart and Winston, 1954
Buku Teks SO
Trzyna, Thomas N.
Wadsworth, 1987
Buku Teks SO
Budinski, Kenneth G.
ASM International, 2001
eBooks
general editor, Philip Rubens
Henry Holt and Company, 1992
Buku Referensi
Campbell, William Giles
Houghton Mifflin, 1967
Buku Teks