E. Noor, N. Kamaruzaman, N. Jeffri, N. Eezammudden, and N. Noh, “Periodontal Referral Pattern in Periodontal Specialist Clinic in Faculty of Dentistry, Universiti Teknologi MARA (UiTM): A Retrospective Pilot Study”, Compend. Oral Sci., vol. 5, pp. 37–45, Sep. 2018.