Gaya APA

Schlumberger, D. (.a.)). Cementing technology. Chapter 9 14 (Fotocopy) ((s.a.)). : USA : Dowell Schlumberger, (s.

Gaya MLA

Schlumberger, Dowell. "Cementing technology. Chapter 9 14 (Fotocopy)". (s.a.) : USA : Dowell Schlumberger, (s, .a.). Text.