APA (7th ed.) Citation

Mainville, M. D., Dembroski, C., & Christa, A. A Christmas Triptych.

Chicago Style (17th ed.) Citation

Mainville, Mary Denise, Celene Dembroski, and Alma Christa. A Christmas Triptych.

MLA (8th ed.) Citation

Mainville, Mary Denise, et al. A Christmas Triptych.