Gaya APA

Nield-Gehrig, J, S. (2008). Fundamental of Periodontal Instrumentation & Advanced Root Instrumentation (6th Edition). Philadelphia: Wolters Kluwer.

Gaya MLA

Nield-Gehrig, Jill, S.. "Fundamental of Periodontal Instrumentation & Advanced Root Instrumentation". 6th Edition Philadelphia: Wolters Kluwer, 2008. Text.