Gaya APA
Trojan, R, A, F, P, K. (1981).
Engineering Materials And Their Applications (2).
Boston:
Houghton Mifflin Company.
Gaya MLA
Trojan, Richard, A., Flinn,, Paul, K..
"Engineering Materials And Their Applications".
2
Boston:
Houghton Mifflin Company,
1981.
Text.