Cita APA (7a ed.)

Arenas, M., Gonzales, M., & Cham, W. Average comfortable opening time of the mouth: A pilot study.

Cita Chicago Style (17a ed.)

Arenas, Michelle, Marco Gonzales, y Winston Cham. Average Comfortable Opening Time of the Mouth: A Pilot Study.

Cita MLA (9a ed.)

Arenas, Michelle, et al. Average Comfortable Opening Time of the Mouth: A Pilot Study.