Gaya APA
Berns.H,Theisen.W, . (2008).
Ferrous Materials Steel and Cast Iron (E-Book) .
Germany:
Springer Verlag Berlin Heidelberg.
Gaya MLA
Berns.H,Theisen.W, .
"Ferrous Materials Steel and Cast Iron (E-Book)".
Germany:
Springer Verlag Berlin Heidelberg,
2008.
E-book.