Gaya APA
Willard, H, H. et al (1988).
Instrumental methods of analysis (7th ed).
Belmont California:
Wadwort Publishing Company.
Gaya MLA
Willard, Hobart, H.. et al.
"Instrumental methods of analysis".
7th ed
Belmont California:
Wadwort Publishing Company,
1988.
Printed Book.