Cita APA (7th ed.)

European Federation of Periodontology & Tonetti, M. S. (1974). Journal of clinical periodontology. Blackwell.

Cita Chicago (17th ed.)

European Federation of Periodontology i Maurizio S. Tonetti. Journal of Clinical Periodontology. Oxford: Blackwell, 1974.

Cita MLA (8th ed.)

European Federation of Periodontology i Maurizio S. Tonetti. Journal of Clinical Periodontology. Blackwell, 1974.