Gaya APA
Petty, E. (1968).
Physical Metallurgy 1 : Physical Metallurgy of Engineering Materials .
London:
George Allen and UNWIN Ltd.
Gaya MLA
Petty, E.R..
"Physical Metallurgy 1 : Physical Metallurgy of Engineering Materials".
London:
George Allen and UNWIN Ltd,
1968.
Printed.