APA (7th ed.) Citation

Nield-Gehrig & Willmann. (2008). Foundations of periodontics for the dental hygienist (2nd ed.). Lippincott Williams & Wilkins.

Chicago Style (17th ed.) Citation

Nield-Gehrig and Willmann. Foundations of Periodontics for the Dental Hygienist. 2nd ed. Philadephia: Lippincott Williams & Wilkins, 2008.

MLA (8th ed.) Citation

Nield-Gehrig and Willmann. Foundations of Periodontics for the Dental Hygienist. 2nd ed. Lippincott Williams & Wilkins, 2008.