Gaya APA
Smith, R., Andres, C. (1989).
Materials of construction / R.C. Smith, C.K. Andres (Ed.ke-4).
New York:
McGraw-Hill book company.
Gaya MLA
Smith, R.C.., Andres, C.K..
"Materials of construction / R.C. Smith, C.K. Andres".
Ed.ke-4
New York:
McGraw-Hill book company,
1989.
Skripsi.