Cita APA (7a ed.)

University of Pennsylvania. School of Dental Medicine & University of Pennsylvania. School of Dentistry. The Penn dental journal. University Printing Office.

Cita Chicago Style (17a ed.)

University of Pennsylvania. School of Dental Medicine y University of Pennsylvania. School of Dentistry. The Penn Dental Journal. Philadelphia: University Printing Office.

Cita MLA (9a ed.)

University of Pennsylvania. School of Dental Medicine y University of Pennsylvania. School of Dentistry. The Penn Dental Journal. University Printing Office.